baber/WOPTO huggingface dataset:
Patent GB-1498473-A (GB)
Title: Metal enclosed vacuum circuit interrupter switchgear
IPC: H02B11/167
Filed: 1975-10-15
Abstract: 1498473 Switchgear structures ALLIS-CHALMERS CORP 15 Oct 1975 [21 Oct 1974] 42257/75 Heading H1N Vacuum interrupter switchgear comprises a three phase circuit breaker compartment into which extend a plurality of vertical main and load bus-bars all arranged in a single horizontal Straight line and a withdrawable three phase circuit breaker unit 22 in the compartment comprising a plurality of vertical vacuum interrupters 61-66 arranged in a corresponding horizontal straight line on insulating supports 136-138, each interrupter being associated with a respective bus-bar so that a terminal contact 61A-66A of each vacuum interrupter connects with a respective terminal on a respective busbar when the circuit breaker unit is lifted vertically by an actuator mechanism. An interlock arrangement 101 prevents entry of the circuit breaker unit fully into the compartment if the vacuum interrupters are closed, Fig. 9, not shown. A rating sensing interlock, Fig. 15, not shown, prevents entry into the compartment of a circuit breaker unit of an incorrect rating. A shutter, Fig. 6, not shown, prevents accidental contact with the bus-bar terminals when the circuit breaker unit is disconnected. The vacuum interrupter operating mechanism, which is provided with a trip-free linkage arrangement 112, comprises a drive bar 121 which through cranks 156 moves connecting rods 153 to move the interrupter contacts 146, 147. Circuit breaker tripping may be by solenoid, Fig. 7, not shown, or manually by release button, Fig. 16, not shown. Movement of the drive bar can also be arranged to operate any auxiliary switches, Figs. 11, 12, not shown. The circuit breaker lifting mechanism 95, which may be manual crank or motor 110 via a friction clutch 262, comprises a ball screw 261, ball nut 296 and racking bar 297 which move horizontally and via actuating arms 301 cause rotation of racking arms 259 about rollers 94 confined within trackways in the compartment to lift the circuit breaker unit. To prevent the circuit breaker unit lowering by its own weight turning the lifting mechanism a one-way clutch and brake mechanism (270) is provided, Fig. 7, not shown. A visual indication of the condition of the circuit interrupters is provided by colour coded flags, Fig. 18, not shown.
Patent GB-1216849-A (GB)
Title: Improvements in and relating to record players
Inventor: CHEESEBORO ROBERT GAINES
IPC: G11B17/04
Filed: 1967-12-08
Abstract: 1,216,849. Automatic control of speed. CHEESEBORO PRODUCTS CORP. Dec.8, 1967 [Dec.12, 1966], No.42354/69. Divided out of 1, 216, 845. Heading G3R. [Also in Division G5] In a control arrangement for a gramophone drive motor which is operated from a pulse source having a frequency which is a function of the required motor speed each pulse supplied from the source is terminated by a signal supplied from a photoelectric circuit responsive to motor speed. The servocontrol 78 for the motor M includes an R.C. oscillator which can be switched 179 to operate at one of two frequencies set by variable resistors 180, 181. The motor has a printed circuit rotor with conductors inter-connected at the rotor periphery forming spikes which co-operate with lamp 178 and photo-cell 177 to generate the motor speed or pulse cut off signals. An increase or decrease in speed results in shorter or longer pulse duration thus decreasing or increasing the power to bring the motor to the required speed. Between the pulses the motor is dynamically braked by its back e.m.f.
Patent GB-1108850-A (GB)
Title: Triazolyl stilbene derivatives
IPC: C07D249/24
Filed: 1966-09-22
Abstract: o-Amino dyestuffs of the stilbene series are prepared by coupling, suitably in aqueous alkaline solution, diazotized 4-amino-21,41- or 31,4-dichlorostilbene-2-sulphonic acid or its alkali metal or ammonium salt with an amino naphthalene sulphonic acid which contains in the 1- or 2- of the naphthalene ring an amino but not a sulphonic acid group.  The dyes are oxidized to naphtriazole stilbene derivatives (see Division C2).  Washing agents, washing liquors and detergents contain brightening agents of formula <FORM:1108850/C4-C5/1> wherein one of X1 and X2 is Cl and the other is H and their salts, e.g. alkali metal or ammonium salts.  The washing liquors may contain ionogenic washing agents as well as compound which give off chlorine, i.e. bleaching agents and numerous examples are given. Fillers, auxilaries and foam stabilizers that may be present are also exemplified.  In brightening detergents the brightening agents are suitably incorporated as solutions in neutral, water-miscible and/or easily volatile organic solvents but may be admixed in finely divided form with or without detergents.  Reference has been directed by the Comptroller to Specification 717,889.ALSO:The invention comprises compounds of formulae <FORM:1108850/C2/1> wherein one of X1 and X2 is Cl and the other is H and salts thereof, e.g. alkali metal or ammonium salts.  They are prepared by oxidizing the o-amino-azo dyestuff obtained by coupling the diazonium compound of 4-amino-21,41- or 31,41 - dichlorostilbene - 2 - sulphonic acid or its salt with an aminonaphthalene sulphonic acid which does not contain a sulphonic acid group in the 1- or 2-position of the naphthalene ring but does contain an amino group there. The oxidation is suitably effected air in the presence of copper-(II) salts and the coupling is preferably carried out in aqueous alkaline solution.  The compounds may be used as optical brightening agents (see Divisions C5 and D1).  Reference has been directed by the Comptroller to Specification 717,889.ALSO:Fibres and fabrics of cellulose e.g. cotton are brightened by treatment with compositions containing compounds of formula:- <FORM:1108850/D1-D2/1> wherein one of X1 and X2 is Cl and the other is H or salts thereof.  Washing agents, detergents and agents giving off chlorine i.e. bleaching agents may also be present and examples of such are given.  717,889.
Patent GB-1436148-A (GB)
Title: Device for continuous ultrasonic testing of metal strip
IPC: G01N29/22
Filed: 1973-09-10
Abstract: 1436148 Ultrasonic testing apparatus THYSSEN NIEDERRHEIN AG HUTTEN-UND WALZWERKE 10 Sept 1973 [2 Nov 1972] 42416/73 Heading H4D A device for the continuous ultrasonic testing of metal strip 1 comprises a roll frame with rolls and a test carriage 6 with a test head holder 7 and drive unit, the carriage being movable to a position defined by distances a, b, Fig. 6, by means of racks 18 and a pinion 17, Fig. 5. In Fig. 4, the carriage is displaced from its desired position, in this case the centre 23 of the strip 1. In Fig. 5, electric motor 21 has rotated pinion 17 and has moved racks 18 such that a guide roller 19 of the right hand rack touches an edge of strip 1. The right hand rack stops and pneumatic arrangement 22 takes up the shock on motor 21. As the right hand rack is stationary, carriage 6 is now moved along the rack by the pinion 17 until the roller 19 of the left hand rack reaches the corresponding edge of strip 1. The left hand rack then stops and again the pneumatic arrangement 22 takes up the shock. The carriage 6 is now on centre line 23, Fig. 6. Rollers 19 are adjustable along the racks to vary distances a, b and hence the final carriage position. The rollers 19 are replaceable and adjustable vertically.
Patent GB-1159858-A (GB)
Title: Return Address Label Dispenser
Inventor: DESMOND JOHN WILLIAM
IPC: A47F1/06
Filed: 1967-09-18
Abstract: 1,159,858. Feeding sheets. J. W. DESMOND. 18 Sept., 1967 [7 Oct., 1966], No. 42449/67. Heading B8R. A dispenser for flexible sheets secured together with adhesive along one edge to form a stack 12, Figs. 1 and 2, comprises a receptacle 11, having means such as a spring 25 to bias the stack upwards, and a lid 18 defining an opening 13, the top of the stack being maintained adjacent the opening, and the lid supporting a friction roller 19 manually rotatable by knobs 22 or 23 to bow the top sheet out through the opening. When the sheet is extended outwardly it can be severed manually from the stack. The lid is removably slidably mounted by means of grooves 18a engaging tongues 11a on the receptacle. The left-hand part 20 of the roller should be leftwards of the edge 21 of the opening.
Patent GB-1279277-A (GB)
Title: A frequency changer
IPC: H02P27/04
Filed: 1969-08-26
Abstract: 1279277 Static frequency changers; control of A.C. motors SIEMENS AG 26 Aug 1969 [2 Sept 1968] 42536/69 Headings H2F and H2J [Also in Division G3] A frequency changer having a predetermined constant current output (e.g. to supply a variable speed A.C. motor 1), comprises a controllable rectifier bridge 2 (Fig. 1) and a controllable inverter bridge 6, the D.C. output of bridge 2 being smoothed by chokes 3, 4 and a capacitor C. In parallel with the inverter bridge 6 is a controlled commutating rectifier bridge 8. Commutating capacitors 7 form with the motor stator windings 1 oscillatory circuits through the elements of bridges 6 and 8 for switching OFF the rectifier elements of inverter bridge 6. Means are provided to maintain substantially constant the difference between the voltages set up at each end of choke 3, which means operates on the control angle of the rectifier elements in bridge 2. Thereby fluctuations in the current I 1  through the choke 3 and thus also in the current I 2  due to counter E.M.F. from the current converter 6, 8, are eliminated. Control arrangement. For pre-setting the direct current I 2  to the inverter, a signal representing the difference between a desired value current I 2 * and the actual value obtained by a device 10, is applied to a current controller 9 which produces an output voltage E. The voltage U 2  at the lower terminal of choke 3 is added to the control voltage E through, a summing amplifier 12 giving a resultant voltage # which through a control device 11 determines the firing angle α of the rectifiers in bridge 2. Thus the current I 1  will depend only upon the control voltage E and will be independent of any variation in U 2  since if E is unchanged any variation in U 2  will produce a corresponding variation in the input voltage U 1  to the choke 3. The current I 1 , and thus also the motor armature current, is maintained substantially constant independently of the mechanical load on the motor. For the purpose of linearizing the relationship between the arithmetical mean value of the output voltage U 1  of the rectifier bridge 2 and the control angle α, over a relatively wide range of output voltage, there is provided a function generator 13 (Fig. 3, not shown), comprising diodes and tapped resistors. In an alternative embodiment, Fig. 2 (not shown), the function generator is not used, and the resultant voltage is produced by adding E and U 2  and subtracting U 1 . The resultant voltage is applied to a proportional plus integral controller which causes the voltage U 1  to follow U 2 , i.e. to be substantially equal to it.
Patent GB-1452671-A (GB)
Title: Die cast magnesium alloy
IPC: C22C23/04
Filed: 1974-10-01
Abstract: 1452671 Magnesium die casting alloy N L INDUSTRIES Inc 1 Oct 1974 [1 Oct 1973]  42631/74 Heading C7A A magnesium alloy of composition:- The alloy may be prepared from a melt at 1300F using a halide flux cover and die cast at 500F and 8,000 p.s.i.
Patent GB-1194897-A (GB)
Title: Lighting fitting for tubular lamps
IPC: F21V19/04
Filed: 1967-09-20
Abstract: 1,194,897. Lighting fittings. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 20 Sept., 1967 [22 Sept., 1966], No. 42769/67. Heading F4R. A tubular lamp 3 having a cap at one end is mounted in a lampholder 5 which is tiltably supported in a housing 1, the other end of the lamp being supported by a readily deformable resilient member 6 so that the lamp can be removed or inserted in the direction C without fouling an adjacent lamp or the end of the housing. The lampholder is supported by a resilient strip 8, and the member 6 is a U-shaped bracket of resilient wire which engages over the end of the lamp and can be tilted about coiled portions 14 at the ends of the limbs, these portions being fixed to the housing by bolts 13. The open side of the housing is covered by a glass guard (not shown).
Patent GB-1395659-A (GB)
Title: Electrical circuit arrangements for the control of dc motors
Inventor: GERHARD A
IPC: H02P7/29
Filed: 1972-09-15
Abstract: 1395659 Control of D.C. motors ROBERT BOSCH GmbH 15 Sept 1972 [17 Sept 1971] 42797/72 Heading H2J A D.C. motor 11 having a separately excited field winding 12 is driven or regeneratively braked by the circuit shown, in which a "driving" thyristor 13 and an "extinguishing" thyristor 14 are controlled to supply the motor with D.C. pulses from a battery 10 and a "braking" thyristor 15 and an "extinguishing" thyristor 16 are controlled to produce regenerative braking when the motor speed is below the nominal speed, regenerative braking above this speed being produced by increasing the current in the field winding 12. During the "blocked" periods of the driving thyristor 13, armature current flows through a "free running" diode 20 and a saturable choke 21, whose inductance value is chosen so that it does not hinder current flow through the diode 20 at the normal pulse frequency of the thyristor 13 but ensures that the voltage peaks occurring at the point 25, due to the commutating action of members 14, 17, 18, flow to negative line 23 via the motor 11 and not to positive line 22 via the "free running" diode 19. If the thyristor 13 is to be pulsed at a relatively high rate, the choke 21 is omitted and the diode 20 is replaced by a thyristor (30) which is fired synchronously with the thyristor 14, Fig. 2 (not shown). For braking above the nominal speed, thyristors 13, 15 are blocked and the field current is increased to reverse the armature current and so produce a braking current from the motor 11 through members 19, 21 to the battery 10. In the aforementioned alternative embodiment, Fig. 2 (not shown), the diode 19 is replaced by a thyristor (29). Below the nominal speed (i.e. when increase of field current will no longer reverse the armature current), braking is achieved by cyclically controlling the thyristors 15, 16 so that conduction of the former produces a short circuit current through the motor to store energy in its armature and conduction of the latter (to block the thyristor 15) produces a high positive voltage peak at point 25 causing current to flow to battery 10 via members 19, 21 (or 29) until the point 25 falls below the battery voltage.
Patent GB-994555-A (GB)
Title: Improvements in or relating to compressed gas and liquid mixing devices
IPC: B22C23/02
Filed: 1963-10-30
Abstract: 994,555. Valves. MALCUS HOLMQUIST A.B. Oct. 30, 1963 [Oct. 30, 1962], No. 42931/63. Heading F2V. [Also in Division B2] A spraying device for projecting at will either an air blast or an oil mist on to the surface of a metal casting mould comprises a single valve member which in a first position provides a direct connection between a compressed air supply 4 and an exhaust nozzle 6, in a second position provides restricted communication between the air supply and nozzle and communication between a liquid inlet 27 and the nozzle so that the air flow can entrain liquid and in a third position closes the nozzle from both the liquid inlet and the air supply. As shown, the valve member is in the third position and comprises a pin 11 carrying valves 9, 17 respectively closing communication between air supply 4 and passage 5 and liquid inlet 27 and passage 28; it is urged upwards by a spring 12. Valve 17 is slidable on the pin being urged upwards by a spring 18. To move to the first position, a handle 21 is depressed somewhat to lower the pin so that valve 9 is opened, the spring 18 keeping valve 17 closed. The unobstructed air forces a resilient frustoconical member 24 wide open to let it flow out freely. In the second position, the handle and pin are fully depressed so that valve 17 is opened and valve 9, although opened, has the passage partially obstructed by a cylindrical member 14 having a restricted orifice 15. The reduced air flow allows the resilient member 24 to contract partially to form an ejector nozzle to entrain liquid from passage 28 and supply it to the nozzle 6.
Patent GB-1192330-A (GB)
Title: A Toy Car and Driving Gear Assembly
Inventor: MIURA KEIICHIRO
IPC: A63H29/04
Filed: 1968-09-10
Abstract: 1,192,330. Toy car. RSAHI TOY CO. Ltd. 10 Sept, 1968, No. 42867/68. 'Heading A6S. [Also in Division' F2]r A toy car is driven by a spiral spring which is wound by means of gearing to the driving wheel shaft '17, the gearing also providing the drive of the vehicle. The' driving assembly comprises a frame 21 fixed to the chassis 50 and a bearing member 12 pivotally connected at 11 to the frame 21, a bearing plate 20 and springs 45 and 46. In operation the frame 21 is lowered by pushing downwards on e.g. strut 58, the car is pushed forward causing the gearing to function and wind spring 23. On releasing the pressure, the spring causes the shaft 24 to rotate and operate the gearing to drive the car. The cogwheel 25 is always meshed with cogwheel 29, cogwheel 30 is meshed with cogwheel 33 when shaft 28 is lowered, cogwheel 35 is always meshed with cogwheel 34, cogwheel 18 is always meshed with cogwheel 25 and cogwheel 19 is meshed with cogwheel 34 when the frame is lowered.
Patent GB-1511766-A (GB)
Title: Electrochemical cells
IPC: H01M50/50
Filed: 1976-10-15
Abstract: 1511766 Casings for electric cells SAFT SOC DES ACCUMULATEURS FIX ET DE TRACTION 15 Oct 1976 [17 Oct 1975 (2)] 43015/76 Heading H1B A cell has a metal container the edges of which are turned down against a closure member which bears directly or indirectly against projections on the electrodes. As shown in Fig. 1, spirally wound electrodes 1, 2 with separators 3 are mounted in a container 4, the rim 10 of which is turned over to bear (through a sealing ring 6) against a metal cover 5 resting on the borders 8 of the electrodes 1. The opposite ends of the electrodes 1 rest on a resilient insulating member 9. The electrodes may be Ni-plated steel sheets covered with sintered metal impregnated with active material. In a modification, Fig. 2alpha, an additional connecting post 20 is provided and the cover 5 a valve with an elastomer pellet 22. In a modification (Fig. 3, not shown) the cover may be of plastics and electrical connection is made by a metal valve cap. In further embodiments the ends of the electrodes may be bent transversely (Fig. 4, not shown) and the electrodes may be wound round a core (Figs. 5 to 8, not shown).
Patent GB-1199743-A (GB)
Title: Process for the Preparation of Hydroxybenzonitriles
Inventor: HEYWOOD BASIL JASON
IPC: C07B/
Filed: 1967-09-21
Abstract: 1,199,743. Preparation of hydroxybenzonitriles. MAY & BAKER Ltd. 18 Sept., 1968 [21 Sept., 1967], No. 43107/67. Heading C2C. 4-Hydroxybenzonitriles and salts thereof of the general formula wherein X and Y which may be the same or different, each represents a H, Cl, Br, or I atom, and Z represents a H, Na, K, or Li atom, are prepared by the demethylation of a 4-methoxybenzonitrile of the general formula wherein X and Y are as defined above, by reaction with an alkali metal compound of the formula MA, wherein M represents a Na or K atom and A represents a cyano group, or M represents a Li atom and A represents a chlorine atom, at a temperature of at least 170 C. in a reaction medium consisting of at least one compound of the general formula RR 1 -NCO-R 2  in which R is an alkyl radical of 1-4 carbon atoms, and R 1 , R 2  which may be the same or different, each represents an alkyl group of 1-4 carbon atoms, or together represent an alkylene group containing 2-3 carbon atoms which may be substituted by 1 or 2 methyl groups, and which together with the -NCO- group to which they are attached, form a 4- or 5- membered, saturated nitrogen containing heterocyclic group, to give a compound of the formula wherein M, X and Y are as defined above, which is optionally acidified to liberate the corresponding 4-hydroxybenzonitrile in which Z represents a hydrogen atom. The examples describe the preparation of 4-hydroxybenzonitrile and 3,5-dichloro-4-hydroxybenzonitrile.
Patent GB-986838-A (GB)
Title: Apparatus for regulating the quantities of feed water, and fuel in a steam generator
IPC: F22D11/00
Filed: 1962-11-14
Abstract: 986,838. Feedwater supply systems. M. BOHLER, and F. WEBER, [trading as BOHLER & WEBER KOMM.-GES.]. Nov. 14, 1962 [Dec. 2, 1961], No. 43140/62. Heading F4A. The quantities of feedwater, fuel oil and possibly also of combustion air supplied to an oil-fired steam generator are regulated in accordance with the steam consumption as indicated by the pressure of the outlet steam. Feedwater is supplied -by a pump 2 to a steam generator 3 and fuel oil by a pump 5 to the burner 4 both pumps being driven by an electric motor 7 which also drives air supply means 8. An infinitely variable transmission unit 6 is mounted in the drive to the pumps 2 and 5. The steam outlet pressure measured by a gauge 9 is used to control the transmission unit 6 and therefore also the speed of the pumps 2 and 5 and in addition regulates the supply of combustion air by a damper 11.
Patent GB-1271522-A (GB)
Title: Glazing and the like
Inventor: HOWORTH RONALD
IPC: E06B3/62
Filed: 1968-09-11
Abstract: 1,271,522. Glazing. MILES REDFERN Ltd. 10 Sept., 1969 [11 Sept., 1968], No. 43164/68. Heading E1R. A panel 11 is mounted on a frame member by a peripheral block- 15, a resilient strip 17 on one side supported by frame shoulder 16, and a resilient gasket 13 on the other side. Gasket 13 has a ribbed foot 13a in a groove 18 in the frame member and limbs engaging the panel and a frame abutment 101.
Patent GB-1534637-A (GB)
Title: Temperature control system for automotive thermal reactor
IPC: F02M7/12
Filed: 1977-10-21
Abstract: 1534637 Temperature control NISSAN MOTOR CO Ltd 21 Oct 1977 [21 Oct 1976] 43901/77 Heading G3R The temperature of a thermal reactor 12 in an IC engine exhaust system is controlled by adjustment at 32, 34 of the engine air intake in a manner which ensures quick response to under-temperature but sluggish response to over-temperature. In Fig. 3: a represents temperature variations sensed at 14 in Fig. 1; b represents the temperature error established at 18; c is the output of the rectifier 22; d is the time-integral of c; and e is (c + d). The waveform shaper 24 (which is required to develop waveform e) can thus Fig. 2 (not shown) consist essentially of a PI parallel circuit, but a more elaborate circuit which includes differentiating units is also suggested Fig. 5 (not shown). Curve e is a particular embodiment of a general requirement of the invention, viz that the rate of rise is greater and the rate of fall less than that of the error curve b from which it is derived. The curve e output of unit 24 controls the production by units 26, 28, 30 of a variable mark-space ratio pulsed power supply which operates the valves 32, 34.
Patent GB-1480933-A (GB)
Title: Foldable closure structure
IPC: E06B3/48
Filed: 1974-10-11
Abstract: 1480933 Folding screen DYNAFLAIR CORP Ltd 11 Oct 1974 [11 Oct 1973] 44060/74 Heading E1J A screen which is foldable in accordionfashion comprises a plurality of panels 12 hinged together along their vertical edges 13. The screen is suspended from a trackway by support rods 19 held in the bore 21 centrally placed in the panel. The edges of the panels have an enlarged tubular bead 13 secured in the bore 25 and slot 26 of the hinge members 15. A connecting rod 17 passes through the cylindrical bores 18 of the hinge members pivotally interconnecting the panels. The concave surfaces 27 of the hinge members abut the edge 13 of the adjacent panel when the screen is fully extended. The panels are preferably of plastics but may be steel aluminium or wood and the hinge members are plastics or aluminium.