baber/WOPTO huggingface dataset:
Patent GB-447114-A (GB)
Title: Improvements in or relating to rotating hearth furnaces
IPC: F27B21/06
Filed: 1934-10-12
Abstract: 447,114. Tunnel furnaces. McLAY, G. S., Shell Mex House, Strand, London. Oct. 12, 1934, No. 29234. [Class 51 (ii)] In an annular furnace, particularly for heating billets, the roof 8, side walls 1, 1<1>, and the rotary hearth 17 are all separately supported and means are provided for effecting, without moving the roof or the main body of the hearth, relative adjustment as to height between the lower edges of the side walls and the hearth. The walls 1, 1<1> are carried by ring structures bolted to vertical stanchions 2, 2<1> and each formed in two parts 3, 4, and 3<1>, 4<1> bolted together, the lower portions 6, 6<1> of the parts 4, 4<1> being watercooled and carrying sealing plates 13, 13<1> depending into sand troughs 44, 44<1>. The adjustment between the walls 1, 1<1> and the hearth may be obtained by providing slotted bolt holes in the stanchions 2, 2<1>, by placing packing pieces between the ring structures 3, 4 and 3<1>, 4<1>, or, as shown in Fig. 4, by making the outer sections 19, 19<1> of the hearth vertically adjustable on the main body thereof. This latter is effected by the provision, in the outer hearth-supporting rings 14<1>, 14<5>, of slotted holes through which are passed bolts securing these rings to the adjacent rings 14<2>, 14<4>. The outer rings 14<1>, 14<5> are formed with upstanding flanges 15, 16 which embrace the outer hearth sections 19, 19<1> and carry sealing plates 21, 21<1> depending into the troughs 44, 44<1>. The hearth-supporting rings 14' ... 14<5> are freely supported upon I-beams 23 to which are secured circular beams 24, 25 carrying the rails 27, 28, which run on rollers 29, 30, and a rack 32 co-operating with one or more driving pinions. Certain of the beams 23 are formed with projections 33, 33<1> which engage between spaced projections 34, 35 and 34<1>, 35<1> on the rings 14<1>, 14<5> with sufficient play to permit a limited movement of the hearth due to expansion and contraction.
Patent GB-1120075-A (GB)
Title: Device and process for cooling an extruded tubular thermoplastic film
Inventor: PRINCEN HERMANUS HENDRICUS
IPC: B29C48/10
Filed: 1967-06-26
Abstract: 1,120,075. Improvements in cooling tubular thermoplastic film. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 26 June, 1967, No. 29290/67. Heading B5B. In the manufacture of tubular thermoplastic films by extrusion of a polymer melt from an annular orifice, and cooling the extruded film with a gaseous cooling fluid supplied from a cooling ring surrounding the tube, an annular guide wall is mounted coaxially with the cooling ring, at least a portion of the guide wall being adjustable in a manner not affecting the size and position of the fluid discharge openings in the cooling ring, and adjustment means are provided for varying the position of the adjustable portion of the guide wall while maintaining the coaxial relationship thereof with the cooling ring. In one embodiment (Fig. 2) the guide wall 11 is composed of a large number of resilient trapezium shaped blade elements 28 mounted in circular arrangement, so that their non-parallel edges overlap, each blade being secured individually at its lower end to the cooling ring 19. An internally threaded ring 24 mounted on top of the cooling ring is in communication with an externally threaded adjustment ring 25, rotatable within the ring 24, and having an annular inner edge 27 against which rest the blade elements of the annular guide. Rotation of the ring 25 by means of a handle 29 causes the edge 27 to move in a vertical direction thereby allowing the blades to move outwards or inwards depending on the direction in which the ring is screwed. Cooling air supplied by a tube 16 is discharged through slits 22 and 23 in the cooling ring and flows through the annular passage between the guide wall and the surface of the tube, the annular passage comprising a restriction 17 forming a Venturi throat, the location and dimensions of which may be altered using the above apparatus.
Patent GB-197614-A (GB)
Title: Clutch mechanism for power-driven sewing machines
IPC: D05B69/12
Filed: 1922-02-13
Abstract: 197,614. Fairweather, W., (Singer Manufacturing Co.). Feb. 13, 1922. Addition to 186,130. Clutches, friction; gearing for stopping and starting machinery.-In means for stopping and starting sewing- machines of the type described in the parent Specification. a thrust rod is connected at one end to the clutch controlling- lever and is received at its other end in a central socket of the driven clutch member, these connections forming its sole supports. An electric motor 7 drives by spiral gears 9, 10 a clutch member 6 loose on the main shaft 4, to which the driven member 12 is slidablv keyed. The member 12 is connected by a ball-ended thrust rod 22 to a spring-pressed plug 23 carried by the arm 28 of an actuating-lever 36, by means of which the clutch is put into engagement against its spring 16. The arm 35 of the lever 36 carries a brake block acting on the side of the member 12 to press it into contact with a stationary block 34 on a bracket 33. The lever 36 is connected by linkage 37, 38, 40 to a treadle, initial depression of which releases the brake and permits the wheel 12 to be turned by hand, complete depression putting the clutch into engagement. A coil spring 41 tends to hold the brake in action, as shown.
Patent GB-654333-A (GB)
Title: Improvements in voltage stabilisers
IPC: G05F1/52
Filed: 1948-11-11
Abstract: 654,333. Automatic voltage regulation for rectifiers. FOSTER TRANSFORMERS & SWITCHGEAR, Ltd., and JENNINGS, R. E. Nov. 11, 1948, No. 29302. [Classes 38 (ii) and 38 (iv)] A voltage stabilizing device for providing from an alternating current source a supply of direct current, the voltage of which is kept substantially constant under varying load conditions has the alternating current fed through a grid-controlled rectifier, the operation of which is controlled by an alternating voltage, in quadrature to the rectifier input, superimposed on a bias voltage derived from the output voltage measured against a constant voltage, the difference being amplified to provide a control voltage for the rectifier. Should the voltage across the lines 1, 3 tend to increase, and assuming the resistor R5 connected to the line 3, the potential of the anode of the amplifier valve V3 will fall since the cathode is at a constant potential due to the presence of the neon tube V4. The potential of the anode of a second amplifier valve V6 will consequently fall and this is communicated to the control grids of a pair of gas-filled rectifier valves V1, V2 through two quadrature phase-shifting networks to reduce the conducting periods of the valves and so return the voltage across the lines 1, 3 to the stabilized value. To compensate for output voltage variations due to variations in input voltage a D.C. voltage from a rectifier bridge M1, which is dependent on the input voltage, is injected into the potentiometer network R2, R3, R4, R5. By suitable design of the components in this circuit over-compensation may be obtained.
Patent GB-396031-A (GB)
Title: Improvements in dynamo electric machines
IPC: H02K21/22
Filed: 1931-10-22
Abstract: 396,031. Magnetos. BOSCH AKT.- GES., R., 4, Militõrstrasse, Stuttgart, Germany. Oct. 22, 1931, No. 29310. Convention date, Nov. 29, 1930. Void [Published under Sect. 91 of the Acts]. [Class 35.] In a generator giving more than two flux alternations per revolution and having magnets m substantially in the form of segments of a hollow cylinder and armature cores a subtending the same chord as the magnets, the number of magnets is equal to the number of armature cores and the angle subtended by each magnet equals or exceeds 180‹ divided by the number of magnets. Where specially long permanent magnets are required, the ends may be bent back to form pole pieces as shown in Fig. 4 or L-shaped soft iron pole pieces may be provided at the ends of the magnets. The armatures or the magnets may be rotatable.
Patent GB-535085-A (GB)
Title: Improvements in and relating to pyrophoric lighters
IPC: F23Q2/26
Filed: 1939-11-03
Abstract: 535,085. Frictional igniters. DUNHILL, LTD., A., DUNHILL, A. H., WISE, F. C., and GREENWOOD, W., (trading as WISE & GREENWOOD), Nov. 3, 1939, No. 29338. [Class 75 (iii)] A hollow cylindrical sleeve 10 carrying a length of loosely woven tinder 11 and having its end 12 cut at an angle to form a striker is detachably mounted in a pocket 7 in the casing 1 of a pyrophoric lighter of the kind in which a wick dipping into fuelsaturated wadding in the casing is ignited from sparks obtained by rotating an abrasive wheel 3 in contact with a flint carried by a tube 2. The tinder is ignited by rubbing the striker over the face of a plate 13 of pyrophoric material mounted on the side of the lighter casing. A spring tongue 14 cut from the metal of the sleeve 10 holds the sleeve in the pocket 7 and grips the tinder 11. Alternatively the pyrophoric material may be applied to the sleeve 10 and the plate 13 formed of abrasive material.
Patent GB-503432-A (GB)
Title: Improvements relating to fuel injectors of internal combustion engines
IPC: F02M53/04
Filed: 1937-10-27
Abstract: 503,432. Liquid - fuel injectors. BRYCE, Ltd., and GREEN, G. W. A. Oct. 27, 1937, No. 29347. [Class 7 (iii)] Longitudinal passages in an. injector permit circulation of a cooling liquid through an annular chamber formed by covering an annular recess 4, in the outer surface of the injector body 2, with a tubular sheath 10. The longitudinal passages may be drilled through the body 2 or as shown may be formed by longitudinally extending flats 5 which are covered by the tubular sheath 10. The cooling liquidis fed to and from the passages by inclined ducts 8. The tubular sheath 10 may be formed of copper which is either secured in position by spinning or rolling parts adjacent its ends into annular grooves 3, 7 or clamped between a resilient rubber packing ring, abutting an outer block portion 1 of the injector, and a second packing ring, by means of a cap screwed on to the nozzle end of the injector. In a multicylinder engine the injectors may be connected in parallel to two manifolds, one serving to supply and the other to discharge the liquid from the injectors.
Patent GB-645603-A (GB)
Title: Improvements in or relating to liquid measuring and dispensing apparatus
IPC: B67D7/08
Filed: 1948-11-11
Abstract: 645,603. Toothed gearing. PARKWOOD ENGINEERING CO., Ltd., and GODDARD, H. F. Nov. 11, 1948, No. 29381. [Class 80 (i)] [Also in Group XVIII]:, Mechanism for bringing to zero the indicator in a petrol pump includes a pivoted toothed sector 42 and a gear wheel 48 cooperating with the indicator pointers, zeroizing being effected when the toothed sector moves downwards and so engages and rotates the gear wheel. To facilitate engagement the teeth 55 of the sector 42 are rather pointed and the lower radial edge of the sector has a sliding or pre-selector tooth 56 urged outwards by a spring 57 which ensures ready engagement when the sector is pulled downwards' by a chain 41.
Patent GB-1277895-A (GB)
Title: Wall construction
Inventor: RATLIFF GEORGE DAVID JR
IPC: E04B2/74
Filed: 1969-06-10
Abstract: 1277895 Partition walls; building panels UNITED STATES STEEL CORP 10 June 1969 [14 June 1968] 29434/69 Headings E1B and E1W A partition wall comprises a plurality of aligned panels 10 each including a pair of wallboards 20, 22 spaced apart by outwardly open channels 16, 17 along two opposite edges, which at each joint form a cavity in which a fire-resistant barrier member 30 is disposed to bridge the cavity in the transverse direction of the wall, and to opposite transversely extending faces of which carrier member, fire resistant spacer members 32 are secured, the spacer members 32 having less width measured transversely of the wall than the barrier member. The barrier member 30 and the spacer member 32 may be formed of gypsum wallboard. The wallboards 20, 22 are secured to the channels 16, 17 by fasteners 21 which may project into spaces defined by the spacer members. A channel shaped or hollow internal support member 34 receives a heat sink member 36 which controls the temperature rise of the fastener 21 which may be used to connect the panels to the support member. The heat sink may be formed of material, e.g. gypsum or cement containing water chemically bonded thereto, or may have water mechanically incorporated therein. A double partition wall Fig. 8 may be formed by a pair of walls, each constructed in accordance with the invention, the joints in a first of the pair of walls being staggered in relation to the joints in the second of the pair. The first and second walls of the pair may have interposed therebetween a filler wall board which is spaced from the first and second walls.
Patent GB-1147597-A (GB)
Title: Signal processing means for detected pulse signals
Inventor: LEITER HARRY
IPC: G01T1/166
Filed: 1966-06-30
Abstract: 1,147,597. Measuring radio-activity. H. LETTER. June 30, 1966, No.29445/66. Heading G1A. [Also in Division H4] A pulse discriminating circuit comprises a gate 34 to which pulses are fed and a gate control circuit, e.g. a monostable circuit 30, triggered by the input pulses to open the gate. The arrangement is such that only pulses having a minimum repetition frequency are transmitted by the gate. If the output from the gate 34 is fed to an inhibit gate 48 controlled by a further monostable circuit 42, then this gate will pass only signals below a predetermined p.r.f. and a signal will only be produced at output 52 if the p. r.f. of the input signal lies within predetermined limits. In a modification, Fig.4 a number of gates 34 and monostable control circuits 30 may be connected to a common input. If each circuit responds to signals above a different minimum p.r.f., the resulting summed output will be weighted in dependence on the p.r.f. The circuit is employed in radiation recording apparatus, Fig. 1 (not shown), in which a patient is given a dose of radio-active iodine, and a scintillation counter is scanned over a region of the body, the resulting pulse signal being fed to a discriminator as described above. The discriminator output is used to vary the intensity of a lamp which scans across a recording means in syncronism with the movement of the scintillation detector across the body.
Patent GB-653424-A (GB)
Title: Improvements in or relating to controls for vehicles
Inventor: BRISTOW ARTHUR WILLIAM
IPC: G05G5/24
Filed: 1948-11-12
Abstract: 653,424. Preventing unauthorized use of vehicles. ARENS CONTROLS, Ltd. Nov. 12, 1948, Nos. 29465/48 and 12832/49. [Class 79 (iii)] [Also in Groups XXIV and XXXIV] In order to prevent the unauthorized or inadvertent movement of a vehicle, the handbrake comprises a control handle 2 which is connected by the cable 11 to the brakes and is slidable upon a fixed supporting member 1 and engageable therewith by a ratchet mechanism, means being provided for locking the ratchet mechanism in its operative condition. As shown in Fig. 2, the ratchet teeth 4 in the member 1 extend only over part of the face thereof and the brake is released by rotating the handle 2 so that the pawl 5 moves out of engagement with the teeth. The brake is locked by preventing such rotation of the handle 2, this being done by operation of a lock 14, which may be of the type known by the Registered Trade Mark " Yale " so that a bolt member 15 is moved into engagement with a slot 6 cut longitudinally in the member 1. A modification is described in which the keylock is operated in combination with the vehicle ignition switch.
Patent GB-741642-A (GB)
Title: Improvements relating to electronic computing apparatus applicable inter alia to resistance welding monitor and control systems
IPC: B23K11/24
Filed: 1953-10-26
Abstract: 741,642. Control systems for resistance welding. GENERAL ELECTRIC CO. Oct. 26, 1953 [Oct. 25, 1952], No. 29558/53. Drawings to Specification. Class 38 (4). A control system for terminating conduction of resistance welding ignitrons upon a predetermined percentage voltage change across the welding electrodes indicative of completion of the weld, and for indicating if the change occurs within a given time from initiation of flow of welding current, comprises means for obtaining two control voltages representative, respectively, of the magnitude of the welding current and the voltage across the electrodes and a relaxation oscillator comprising a condenser charged over an impedance varied in accordance with one control voltage and an arc discharge device having a grid controlled by the second control voltage, so that the frequency of the oscillator varies with the resistance, or conductance, of the work during the weld. An Eccles-Jordan circuit is triggered by each discharge of the condenser and so generates a pair of square voltage waves of varying frequency which control, respectively, a pair of valves each shunting a separate capacitor. These capacitors are normally charged from a D.C. source over separate resistors but are periodically discharged by their associated shunt valves when rendered conducting by the square voltage waves. The time constant of one of the capacitor-resistor circuits is adjustable to slow selection of the percentage voltage change at the weld at which the system becomes effective to terminate the weld. The voltage across one capacitor is applied over a rectifier to a " memory " condenser which charges up to the maximum voltage across the capacitor, i.e. the voltage across it at the commencement of the weld, whilst the voltage across the other capacitor is similarly applied to a " follower " condenser shunted by a relatively low-valued resistor, so that the voltage across this condenser follows the capacitor voltage as the weld proceeds. A valve, responsive to the voltages of the " memory " and " follower " condensers, conducts when the two voltages become equal and effects blocking of the welding ignitions to terminate the weld. An indicator system is provided, showing whether termination occurred before, during, or after a " normal " welding period.
Patent GB-281087-A (GB)
Title: Improvements in or relating to apparatus for converting alternating electric current into direct current
IPC: H02K47/06
Filed: 1926-11-23
Abstract: 281,087. Peebles & Co., Ltd., B.. and La Cour, J. L. Nov. 23, 1926. Rotary converters and transformers .-A motorconverter group adapted to give high voltage on the continuous-current side comprises a cascaded induction motor and rotory converter on a common shaft as usual, and a continuous-current generator driven from the same shaft and having its armature electrically connected to that of the rotary converter. The generator is designed to take up a large proportion of the mechanical power transmitted from the motor to the stator of the induction motor whereby the size of the rotary converter is kept down. In the form shown, the induction motor armature A<2>, cascaded rotary converter armature B<1> and continuous-current generator armature C are all mounted on the same shaft D and the generator and converter armatures are connected in series to give voltage addition. Both machines are shunt wound and by means of the generator and converter field rheostats F, G the continuouscurrent output voltage and power factor of the set may be respectively controlled. When such a set is used for high-voltage railway work, the converter brush E is earthed and the generator terminal E<1> is connected to the line.
Patent GB-1196186-A (GB)
Title: Controllable Voltage Sources
Inventor: BASHAM GARY RAYMOND
IPC: H03M1/00
Filed: 1968-02-23
Abstract: 1,196,186. Transistor reference voltage switching circuits. LITTON INDUSTRIES Inc. 23 Feb., 1968 [6 March, 1967], No. 29598/69. Divided out of 1,196,185. Heading H3T. A circuit for switching a reference D.C. or A.C. voltage to a load comprises a first switch 50 connecting the reference voltage source 54 and a second switch 52 connecting a further source 56 through a resistor 58 to the load, to supply most of the load current, a further switch being connected across the load. The switches shown are field effect transistors and as most of the load current is supplied from the second voltage source, the current from the reference source is small and the voltage drop across switch 50 is also small. Switch 62 short circuits the load when the other switches are off and a further switch (64, Fig. 4, not shown) may become conductive when 52 is off to prevent the full voltage of source 56 being applied to 52. The circuit is described as applied to the digital to analogue conversion circuit of the parent Specification.
Patent GB-485362-A (GB)
Title: Receiving arrangements for wired-radio systems
IPC: H04J1/08
Filed: 1937-10-29
Abstract: 485,362. Wireless receiving circuits. LORENZ AKT.-GES., C. Oct. 29, 1937, No. 29642. Convention date, Nov. 6, 1936. [Class 40 (v)] A receiving arrangement for a wired wireless multiplexing system comprises oscillatory circuits 2, 7, in which different condensers 4, 8 may be switched in or out to select at will the frequency received. The switches K1, K2 may be conjointly operated. Condensers T are auxiliary trimmer condensers, for small adjustment of frequency.
Patent GB-171117-A (GB)
Title: Improvements in or relating to coking retort ovens
IPC: C10B5/04
Filed: 1921-11-07
Abstract: 171,117. Becker, J. Nov. 8, 1920, [Convention date]. Gaseous - fuel furnaces. - In a vertical-flued coke oven in which the direction of flow of the heating-gases in the flues is reversed at intervals and in which the regenerators are arranged parallel to the ovens the flues of one heating-wall are connected to the flues of an adjacent heating-wall. As shown in connection with an oven which can be heated either by coke-oven gas supplied through conduits 30 and nozzles 32 at the base of the heating flues, or bv regeneratively-heated producer gas, the flues 17 of a heating-wall are in two groups, each of which occupies one half of the length of the wall. The flues of a group open at their upper ends into a collecting-flue 25, which tapers from the middle to the ends, and from the middle a cross connection 26 leads over the oven to a similar collecting-flue for the corresponding group in the adjacent heating-wall. The ovens are carried by strong supporting walls 13, 22 beneath the heating-walls and ovens respectively, and between these walls are regenerators G, H, divided to correspond with the flue groups in the heating- walls. The supply and exhaust connections are so made that the regenerators on opposite sides of the walls 13 operate in the same phase. When cokeoven gas is used for firing, all the regenerators are used for heating air, or half may be used for air and the remainder for supplying waste gases for diluting the combustion products in the flues. When using producer gas the regenerators G, H are used for air and gas respectively.
Patent GB-629277-A (GB)
Title: Improvement in extensometers
IPC: G01B21/32
Filed: 1946-10-04
Abstract: 629,277. Extensometers. UNITED STATES STEEL CORPORATION OF DELAWARE. Oct. 4, 1946, No. 29685. Convention date, June 28, 1946. [Class 40 (i)] An extensometer for a strip rolling mill comprises linear-voltage-speed generators 14, 16 coupled to idler-rolls 4, 10 driven by the strip " S " before and after passing through the work-rolls 6. A fixed resistance R1 and a potentiometer R2 connected across the output of the generator 16 enables its voltage to be balanced against that of the generator 14. A self-balancing device actuates the potentiometer slider 20 which is calibrated to read percentage extension of the strip S. The selfbalancing device may comprise a vibrating contact to produce an intermittent voltage from the slider 20 which after amplification feeds one field of a two-phase motor driving the sliding contact.