baber/WOPTO huggingface dataset:
Patent GB-904960-A (GB)
Title: Apparatus for use in the control of distillation
IPC: G01N25/14
Filed: 1960-02-11
Abstract: <PICT:0904960/III/1> Automatic apparatus for determining the distillation characteristics of a liquid-mixture, such as petroleum, comprises flask 2 provided with electrical-heater 3 and a thermocouple 4, a condenser 7, a distillate-receiver 9, and photoelectric meniscus detectors 8 for triggering a sequence of operations in the apparatus when the distillate in the receiver reaches a predetermined level.  Flask 2 is supplied with liquid, from constant-volume feed-vessel 1, via valve V2.  Flask 2 and receiver 9 are drained through limbs 15 and 18, controlled by valves V3 and V4 respectively.  The valves are of the solenoid-type.  Thermocouple 4 is connected to a recorder 5 which plots a temperature-time chart.  A synchronous motor driven rotary switching device 6 controls the switching on and off of heater 3 and thermocouple 4, and the opening and closing of valves V2, V3 and V4, so that when the distillate-meniscus in the receiver reaches the predetermined level, the heater and thermocouple are switched off, and the receiver is drained.  Flask 2 is automatically flushed and drained, and is then recharged with distilland.  Valve V4 is closed; and finally the thermocouple and heater are switched on again.  Another apparatus is described wherein three feed-streams are selectively introduced into the distilling flask. Specification 860,133 is referred to.
Patent GB-1030352-A (GB)
Title: Supercritical steam power plants
Inventor: HEATHCOTE JOHN
IPC: F22B35/12
Filed: 1964-02-05
Abstract: 1,030,352. Steam generators. FOSTER WHEELER Ltd. Jan. 26, 1965 [Feb. 5, 1964], No. 4928/64. Heading F4A. To prevent burn-out at low loads in a supercritical steam power plant comprising a oncethrough system having a steam generating section 10 and a superheating section 12, feed water is supplied by a multi-stage feed pump 16, 18, 20 through a valve 26 controlled by a line 28 from the superheated steam output and when the load is below a certain amount the control is transferred by a line 28<SP>1</SP> to a valve 32 recirculating the fluid from between the stages of the feed pump through the steam generating section. Feed water is supplied by low intermediate and high pressure feed pumps 16, 18, 20 and a line 30 controlled by the valve 32 leads from the outlet of the steam-generating section 10 to the inlet of the pump 20. During normal operation the valve 32 remains closed, but at periods of low load the valve is opened to allow recirculation of the excess fluid passing through the section 10. In a modification, a start-up sub-critical boiler fed with water from the pump 16 is heated by re-circulation fluid in the line 30 and the sub-critical steam from this boiler is used to warm, run up to speed and synchronize the turbine 24.
Patent GB-849904-A (GB)
Title: Improvements in or relating to automatic gain regulators for carrier telephone systems
Inventor: BOLT REGINALD CHARLES
IPC: H04B3/10
Filed: 1956-02-17
Abstract: 849,904. Automatic volume control. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Jan. 29, 1957 [Feb. 17, 1956], No. 4944/56. Class 40 (4). In a carrier transmission system having pilot-controlled gain regulation, the amplitude of the pilot above a predetermined value controls a thermistor in the transmission path by way of a peak amplifier, the amplifier including a negative feedback path which is effective only when the pilot amplitude fluctuates at a low frequency. As shown, the pilot signal is applied over a transformer TR1 to an amplifier comprising pentode valves VI, V2, and after rectification at MR1 is transmitted to the thermistor over terminals 12 and 13. The cathode of valve VI is connected over a resistor R1 to positive biasing potential + 25 V., and is also directly connected to earth by a condenser C1 which is of such value that it provides a decoupling path for the pilot frequency. In operation, pilot signals either of constant amplitude or fluctuating at a high frequency are amplified by V1 with maximum gain. If, however, the amplitude fluctuates at a low frequency, the fluctuations appear at the cathode of V1 as C1 presents a high impedance. Negative feedback over R1 is thus established and the gain reduced, so that a relative reduction of the lowfrequency fluctuation is obtained which prevents the loop gain of the regulator from exceeding unity.
Patent GB-642267-A (GB)
Title: Condenser with a laminated dielectric thickened at its marginal portions
IPC: H01G4/32
Filed: 1948-02-19
Abstract: 642,267. Electric condensers. MICAFIL AKT.-GES. Feb. 19, 1948, No. 4961. Convention date, Feb. 19, 1947. [Class 37] Condensers of the type comprising metallic layers with oil-impregnated layers of insulating material inserted between the metallic layers, the whole being wound into a roll which is generally pressed flat, are strengthened by the insertion of extra dielectric at the marginal regions. In order to strengthen these marginal regions as compared with the middle portion of the condenser at least one layer of insulating material is inserted in both marginal regions of the condenser between two full-width layers of metallic material. In Fig. 1 an intermediate layer R1 is inserted in the border regions between full-width layers D1 and D2 of insulating material within the metallic layers B1 and B2. Continuous layers of insulating material D3 and D4 are provided above B1 and below B2 respectively and an intermediate layer R2 above the insulating layer D3. In order that after winding an intermediate border layer is always between all windings of the metallic layers. In order to avoid breakage of the layers when the condenser is pressed flat after winding, as shown in Fig. 14, the intermediate layers R1 may be varied in length to provide a gradual radius at the transition from the middle to the end portions. 'Various numbers and arrangements of intermediate layers may be made to meet different voltage requirements. A number of condensers may be stacked as shown in Fig. 16.
Patent GB-1140689-A (GB)
Title: Improvements in plunger operated switch unit
Inventor: SLONNEGER JOHN LEE
IPC: H02K11/23
Filed: 1966-02-04
Abstract: 1,140,689. Speed-responsive switches. GENERAL ELECTRIC CO. 4 Feb., 1966, No. 4966/66. Heading H1N. A switch unit suitable for controlling the starting winding of an A.C. motor consists of a snap-action switch 40 and a non-snap switch 70 in a common housing 32, the non-snap switch having a flexible contact arm 121 which applies a bias to an operating plunger 84 to cushion the plunger as it reaches its extreme position in one direction as a result of a continuous bias applied to the plunger by a toggle spring 114 of the snap switch. The switch 40 has a contact 52 movable between fixed contacts 97, 98 and biased to contact 98 by spring 114. Release of the plunger 84 by a speed-responsive member 77, causes contact 52 to change over, and contact 123 on arm 121 to close. The arm 121 passes through an over-sized slot 128 in the plunger so as to be operated with a lost motion, the plunger movement being limited by a plunger recess 131 and housing projection 132. The contacts 99, 123 are connected in an auxiliary circuit via terminals 71, 73, but in a modification (Fig. 15) in which these contacts are normally closed and the moving contact 181 is connected to terminal 54 of the snap-switch, the non-snap switch is connected in the circuit of the start winding of a two-speed motor, the low- and high-speed main windings of which are controlled by the snap switch. Reference has been directed by the Comptroller to Specification 1,081,528.
Patent GB-342911-A (GB)
Title: Improvements in fountain pens
IPC: B43K5/18
Filed: 1930-02-14
Abstract: 342,911. Reservoir pens. PATERSON, J. and PATERSON, J., 29, Tivoli Crescent, Brighton. Feb. 14, 1930, No. 5032. [Class 146 (iii).] In a fountain pen of the type provided with means for cutting off the ink-supply when the pen is out of use, the feed-bar is adapted to be rotated without longitudinal movement relative to a fixed ink passage leading from the reservoir and located in the circular path of travel of the duct in the feed-bar. The nib 1 and feed-bar 3 are fixed in a member 5 secured to a sleeve 8 rotatable in a part 13b carried by the end of the barrel 2. The sleeve 8 is secured in position between packing-pieces 11, 14 by a plug 13 screwed into the part 13b. The duct 4 in the feed-bar is normally in alignment with a passage 4a in a member 3a secured in the plug 13, but rotation of the member 5 moves the duct and passage out of alignment to interrupt the flow of ink. The end of the feed-bar preferably extends into a recess in the plug 13. Indicating-marks may be provided on the parts 5, 13b. In a modification, the sleeve 8 is dispensed with, and an extension of the member 5 engages a recess in the plug 13, the two parts being held together by a ring screwing on to the plug 13 and having an inwardly-turned outer end to hold the member 5 in position. The device is applicable to ordinary or self-filling pens.
Patent GB-143641-A (GB)
Title: Improvements in the purification of coal gas
IPC: C10K1/34
Filed: 1919-02-28
Abstract: 143,641. Berk & Co., F. W., and Hood, J. J. Feb. 28, 1919. Materials for purifying; purifier waste, revivifying.-Carbon disulphide, thiophene, and similar impurities in coal-gas are dissociated to form sulphuretted hydrogen by passing the heated gas over heated alumina, bauxite, or ignited magnesite. The sulphuretted hydrogen is then removed from the gas by the usual methods. When the efficiency of the material has become impaired owing to the deposition of carbon, it may be revivified by the passage of air over the heated mass.
Patent GB-1148705-A (GB)
Title: Multicontact switch
Inventor: DATCHENKO GENNADY KUZMICH
IPC: H01H1/46
Filed: 1968-01-31
Abstract: 1,148,705. Switch contacts; mechanical switches. KRASNODARSKY ORDENA TRUDOVOGO KRASNOGO ZNAMENI ZAVOD ELEKTROIZMERITELNYKH PRIBOROV. 31 Jan., 1968, No. 5081/68. Heading H1N. A multi-contact switch comprises fixed contacts 2 and a rotary arm 4 carrying brushes 7 attached to arm 4 so as to be pivotable about crossing arms disposed at the level of the contact surface in a plane substantially coinciding with the plane of contact of brushes 7 with contacts 2. Brushes 7 are attached by means of angle pieces 8 to a pivot 9 so as to be free to rotate about pivot 9 which in turn is coupled with the end of clamp 6 so as to be free to rotate about pivot 10. Fixed contacts 2 are arranged in pairs in concentric circles round shaft 3. It is stated that this arrangement of pivots 9 and 10 ensures substantially complete coincidence of the plane of action of the force causing movement of brushes 7 when arm 4 is turned with that of the friction force which opposes movement resulting in only a negligible tilting moment.
Patent GB-329033-A (GB)
Title: Improvements in telephone repeater circuit arrangements
IPC: H04B1/58
Filed: 1929-02-15
Abstract: 329,033. Callender's Cable &. Construction Co., Ltd., Urmston, J., and Smith, F. S. Feb. 15, 1929. Addition to 321,673. Two-way repeating systems.-In the telephone repeater circuits described in the parent Specification, and comprising a junction transformer 4 - - 6 coupling the incoming, outgoing and twoway lines 1, 2, 3 and an additional coupling transformer 8, 9 between the incoming and outgoing circuits, arranged so that the currents in the outgoing circuit due to the two couplings neutralize each other when currents arrive over the incoming circuit. The winding 8 is connected in the output of an amplifying valve 20, tha input of which is connected to the incoming circuit in parallel with the input of an amplifying valve 15 feeding the junction transformer. The transformer 8, 9 is provided with a third winding 17 associated with a balancing network 18. By this means, currents from line 2 are substantially prevented from penetrating the incoming circuit and reaching the coupling transformer, and the additional coupling does not load the amplifier 15. The valves 20 and 15 should be matched as regards characteristics and operating conditions, small variations in characteristics being compensated by adjustment of the filament currents or by variation of the input voltage, for example by utilizing a tapped transformer, choke or resistance placed across the incoming circuit. The two valves may be combined in a single structure comprising one filament, one or two grids, and a pair of anodes. The invention is described particularly as applied to the arrangement shown in Fig. 3 of the parent Specification, but may be applied to other arrangements described therein.
Patent GB-767391-A (GB)
Title: Improvements in or relating to fluorescent electric discharge lamps
IPC: H01J61/40
Filed: 1952-02-27
Abstract: 767,391. Glass. SOC. ANON DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST. GOBAIN, CHAUNY & CIREY. Feb. 27, 1952 [Feb. 27, 1951], No. 5205/52. Class 56 [Also in Group XL(a)] The glass envelope of a fluorescent discharge lamp is less than 1 mm. thick and contains vanadium and/or cerium oxide in proportions by weight not exceeding 1 per cent, and preferably below 0.5 per cent, in order to absorb substantially all radiations below 3200Š. Concentrations of vanadium oxide of 0.45 and 0.15 per cent and of cerium oxide of 0.35 per cent, are referred to.
Patent GB-113186-A (GB)
Title: Improvements in Safety or Life Guards for Motor Vehicles and the like.
Inventor: POUPARD FREDERICK ABRAHAM
IPC: B60R21/34
Filed: 1917-04-13
Abstract: 113,186. Poupard, F. A. April 13, 1917. Wheel guards and obstruction-removers. - A wheel guard for motor and like vehicles comprises a downwardly extending framework w, Fig. 1, which is carried by a bracket r, Fig. 2, on the stub-axle so as to turn with the wheels and is pivoted at t to an arm s of the bracket so as to swing laterally under the control of a spring x, and a lower or secondary framework 3 pivoted to the first framework and normally held in a raised or normal position by a spring 5 or equivalent means, which lower framework 3 is provided at its lower end with one or more rollers 4 which contact with and roll along the ground when the wheel-guard strikes an obstacle and the lower framework 3 is depressed. Means also may be provided for locking the lower framework in its depressed position. A centre guard comprising a vertical netted framework a, b, c and a pivoted framework f provided with rollers g<1> may be added, the lower framework being locked in its depressed position by the engagement of teeth p on the framework with a fixed pawl q. The space between the centre guard and wheel-guards may be bridged by cords extending between the wheelguards and passing over rollers 7 at each side of the centre guard, so that no space is left between the centre guard and wheel-guards when the vehicle is turning.
Patent GB-101255-A (GB)
Title: Improvements in Walls.
Inventor: WEISSBRODT ERNEST
IPC: E04B2/42
Filed: 1916-08-31
Abstract: 101,255. Weissbrodt, E. Aug. 31, 1915, [Convention date]. Double walls.-A hollow wall is formed of alternate courses of stretchers 6 and headers 7, the stretchers being separated by an air space 6<1>, and the headers having vertical perforations which communicate with the air spaces above and below for the circulation of hot or cold air. Central projections 3 are provided on the headers to key with the air spaces, and the ends of the headers may be perforated vertically.
Patent GB-212271-A (GB)
Title: Mechanism for feeding and introducing sheets into rotary machines for working paper, cardboard or the like
IPC: B65H9/06
Filed: 1924-03-01
Abstract: 212,271. Soc. Anon. Marinoni Machines et Materiel pour l'Imprimerie et les Industries Annexes, (Assignees of Bobst et Fils Soc. Anon., J.). March 3, 1923, [Convention date]. Dropping-roller and like feeds; sheet-registering devices; sheet-guides; sheet-carriers.-Sheets are fed to shaping-machines for cardboard or the like by hand, or by an automatic feeder, over a table 1, Fig. 3, to front stops 2 arranged behind falling rollers 50 which are raised while the sheets are registered, and are dropped on to rollers 39 as the stops 2 are moved to permit of the forwarding of the sheets to feed-rollers 71, 72 from which the sheets pass to the shaping-machine. The stops 2 are pivoted to vertically movable slides 3 acted on by springs 9, and the slides are depressed by lever arms 10 on a shaft 11 when the sheet is to be forwarded. The shaft 11 is oscillated to cause this depression by a lever 22, Fig. 2, acted on by a cam 25 on a main cam shaft 29. The rollers 50 are carried in arms 46 raised and lowered by a lever 53 oscillated from a cam 26 on shaft 29, and the lower roller 39 is given an oscillating motion by a sector gear 41 controlled by a spring 44 and a cam 27 on shaft 29. The roller 39 is driven so as to have a slight rearward motion as soon as the rollers 50 grip the sheet against it and then it is accelerated until the sheet is forwarded to the forwarding-rollers 71, 72 at the speed of these, rollers. The stops 2 and rollers 50 are adjustable laterally on a bracket 15 arranged between the side frames of the machine, and the stops 2 are adjustable by nuts 6 and screws 7 about a horizontal, pivot so that the stops can be set for dealing with sheets having inclined front edges. An adjustable guide 34, Fig. 3, is arranged in front of the rollers 50, and is set so as to be above the lower roller 39 a distance equal to the thickness of a sheet. A lower guide 13 is arranged behind the stops 2. The rotation of the roller 39 is controlled by a brake device in the form of a dash-pot, the piston of which is on a rack geared to the shaft of rollers 39. The cylinder 60, Fig. 11, of the dash-pot is fitted with a valve 61 provided with a narrow outlet for the air controlled by a screw 64, the air inlet taking place mainly by the raising of the valve by air pressure as the piston ascends. The brake-device acts to prevent shocks to the machine during the return movement of the driving-sector 41. The shaft 45 of the upper roller is automatically stopped by a strap brakes 68, Fig. 9, as the rollers are raised. The roller 50 may be held in raised position, and the stops 2 in depressed position, by projections 85 on a hand-operated shaft 86 which can be set to prevent descent of the arms 46, and so as to prevent actuation of the lever 22. The rollers 72 can also be held out of operation by a pivoted hook, so that sheets can be fed direct to the shaping-machine without the use of the feed-mechanism described.
Patent GB-556133-A (GB)
Title: Improvements in or relating to electric motors for constant current systems
IPC: H02P7/282
Filed: 1942-04-22
Abstract: 556,133. Controlling motors. LANCASHIRE DYNAMO & CRYPTO, Ltd., and STANSFIELD, W. April 22, 1942, No. 5388. [Class 35] [Also in Group XXXVII] A direct current motor 1, forming one of a bank of motors connected in series in a constant current supply circuit 2, has two sets of field windings, one set 4 being fed from a constant voltage supply circuit 3, and the other set 6 being fed from an exciter 7 directly coupled to the motor. The fields produced by these windings act in opposition. Preferably a third field 5 is connected across the terminals of the motor. The exciter 7 has two field windings, one, 9 in series with the main supply leads, and the other 8 connected across its armature. All the windings, except 9, are provided with regulating rheostats, and the constant voltage winding 4 has a buffer resistance 10 permanently connected across it. The supply line 2 may be fed from a constant current generator as described in Specification 556,132 and the constant voltage from the exciter therein described or from other sources of constant current and voltage. The motor is connected into the supply circuit, alternatively with a short-circuiting link by a double pole switch 14 which is operated by a push button 15. To reverse the connections from accelerating to regenerating working, a double pole switch 11 is connected in the circuit of the winding 9 and is linked with a double pole reversing switch, shown in two parts 12, 13 in the circuit of the constant voltage winding 4. A switch 16 is operated if, on regeneration, the motor starts reversing, and trips the main switch. The switch 16 is short-circuited bv a switch 17 during the accelerating period of the motor. In one modification, the winding 9 is not reversed, but the winding 6 has a reversing switch in its circuit. A further alternative has the windings 4 and 6 combined.
Patent GB-765534-A (GB)
Title: Improvements in or relating to wheel suspensions for motor vehicles
IPC: B60G11/18
Filed: 1955-02-23
Abstract: 765,534. Vehicle spring suspensions. FORD MOTOR CO., Ltd. Feb. 23, 1955 [Feb. 24, 1954], No. 5396/55. Classes 108(2) and 108(3) A wheel suspension for a motor vehicle utilises a pair of longitudinally extending torsion bars 34 each being connected at one end to a wheel hub 28 and at the other end being pivotal ly connected to the vehicle frame for movement about a horizontal transverse axis, the pivotal connections with the vehicle frame also incorporating connections to the opposite ends of a stabilizer bar 76 and each wheel hub 28 being rigidly connected to one end of a control arm 31 pivotally connected to the vehicle frame at its other end. The inner ends of the control arms 31 are pivoted to a bracket 33 secured to the underside of a tubular cross frame member 16. The forwardly disposed ends of the torsion bars 34 are pivotally secured to the box section side frame rails 12 as shown in Fig. 2. The side frame rails are apertured to receive a flared sleeve 53 containing a rubber bush 59 the inner annular portion 62 of which supports a tubular cross member 63. A bushing 66 with obtuse angled threads screws into each end of the cross member 63 and holds a washer 64 against the end of the bush 59. The bushing 66 is threaded internally to receive and rotatably support the shank 47 of the torsion bar end support 42. The inner end of each of the shanks 47 is drilled and splined to receive the opposite ends of a stabilizing bar 76. A sealing ring 69 is seated in a groove in the shank 47 and is retained by a ring 70. A differential gear case 21 is resiliently mounted on the vehicle frame and universal joints 27 are disposed on the axle shafts 26 so as to lie on the lines 71 joining the torsion bar end supports 42 with the control arm pivots on bracket 33. The arrangement of torsion rods 34 and control arms 31 may be reversed fore and aft with the torsion rods pivoted to the frame near cross member 14 and the control arms pivoted forward of the differential gear.
Patent GB-714194-A (GB)
Title: Improvements in or relating to apparatus for the extrusion of thermoplastic material
Inventor: BERRY WILLIAM
IPC: B29C48/09
Filed: 1952-02-29
Abstract: <PICT:0714194/IV (a)/1> To increase the uniformity of wall thickness of extruded thin-walled tubes or sheets the extrusion orifice is provided with a plurality of spaced pockets adjacent thereto, each having means for independently regulating the temperature by heating or cooling the pocket and hence portions of the orifice adjacent thereto.  As shown, a heated die 7 has a throughway 17 co-operating with a conical pin 6 to form a circular annular extrusion orifice 16, cooling fluid is circulated in spaced pockets 1, each of 1/8 to 1/2 inch diameter, via pipe 2 and conduit 3 and is controlled by a needle valve 10.  The needle valves may be individually adjusted to control locally the temperature round the orifice and hence the thickness of the extruded tube.  A hollow mandrel whose temperature is adjusted to be lower than that of the extruded tube and having a diameter between 1.1 and 6 times that of the extrusion orifice may be mounted at such a distance from the orifice that the tube is partly congealed on reaching it.  Air may be supplied through conduit 14 to extend the tube.