baber/WOPTO huggingface dataset:
Patent GB-632308-A (GB)
Title: Improvements in or relating to devices for making short-time exposures by means of x-rays
IPC: H05G1/08
Filed: 1946-11-19
Abstract: 632,308. Inductive control circuits for X-ray tubes. PHILIPS LAMPS, Ltd. Nov. 19, 1946, No. 34310. Convention date, May 21, 1943. Drawings to Specification. [Class 38 (iv)] To obtain a close approximation to constant voltage of optimum value during the short exposure time of an X-ray tube subject to a pulsating or impulse excitation an iron-cored choking coil is connected in series with the tube and its self-induction is so varied as to minimize any deviation of the tube voltage from the optimum value. When the tube is excited by rectified A.C. a synchronously-driven commutator may reverse a constant current in a saturating winding on the choke, so that the choke impedance is changed from a minimum value to a maximum value and back again. When a condenser discharge excitation is used a saturating winding on the choke may be connected in series with an auxiliary condenser across the choke terminals. The choking coil may have an air-gap which is varied to obtain the required result.
Patent GB-1355409-A (GB)
Title: Knitting machines
IPC: D04B15/32
Filed: 1971-07-22
Abstract: 1355409 Knitting-machines G BILLI & C SpA 22 July 1971 [7 Aug 1970] 34324/71 Heading D1C In a circular machine the stitch cams are movable vertically downwards against spring pressure by a fluid control device. A slide 15 carrying a stitch cam 17 and a counter cam 19 is mounted on a stirrup 13. The slide also carries two screws 25A, 25B which determine upper and lower positions of the cams, by abutting upper and lower brackets of the stirrup. The slide is urged upwards by a spring 27. A lever 49, pivoted by a piston 43 of a pneumatic cylinder-piston systems 41-47 forces the slide downwards. Pneumatic lines for the systems are housed in a channel 53.
Patent GB-426504-A (GB)
Title: Improvements in and relating to electric motors
IPC: H02K17/08
Filed: 1933-12-06
Abstract: 426,504. Induction motors. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Bergman, S. R. ; 171, Willow Road, Nahant, Massachusetts, and Warner, W. W. ; 1042, Northwood Boulevard, Fort Wayne, Indiana, both in U.S.A.) Dec. 6, 1933, No. 34329. Convention date, Dec. 9, 1932. [Class 35] [See also Group XXXVII] A motor with a phasesplitting condenser of the type in which the condenser winding is in circuit during running as well as at starting is so arranged that, when the voltage across the main winding is varied to alter the speed, that across the condenser winding is altered in the opposite direction. The Figure shows an arrangement in which the junction of the main and condenser windings 10, 11 is connected by a switch 20 to one of a series of taps on an autotransformer 14, which may be supplied with a high voltage at its terminals from lines 12, or with a lower voltage through a tap and lines 13. In a modification for two voltages only the voltage across the main winding at the higher speed is that across the condenser winding at the lower and conversely.
Patent GB-883894-A (GB)
Title: Hydraulic automatic adjusting mechanism
IPC: F16D65/22
Filed: 1958-10-27
Abstract: 883,894. Fluid pressure brakes. GOODRICH CO., B. F. Oct. 27, 1958 [Oct. 28, 1957], No. 34344/58. Class 103 (1). An hydraulic adjusting mechanism, particularly for brakes, comprises an actuator 31 dividing a casing 13 into chambers 13a, 53 having entry and exit openings and being connected by a port 38 controlled by valve member 44 urged by a spring 50 against fluid pressure in chamber 53 into engagement with a seat 39, the member 44 reciprocating in a housing 41 closed at one end to seal off its interior from fluid in the chambers, a passage 54 being provided to permit fluid in chamber 13a to act on the annular surface 52 of valve member 43 to open the valve. On braking, fluid from master cylinder 12 moves actuator 31 to displace fluid from chamber 53 to apply the brake 17-20. If wear has taken place, the actuator 31 will seat on wall 37 of housing 13 and pressure, built up in chamber 13a acts, through passage 54 and groove 40 in the actuator, on surface 52 to raise valve member 43 to permit fluid to flow into chamber 53 and the brake cylinder 16, Fig. 2. On brake release, spring 50 closes valve member 44 on to seat 39 and the fluid in chamber 53, pressurized by the brake return springs 22, returns actuator 31 against spring 55 to the release position, Fig. 1; the volume of chamber 53 corresponds to the volume required to apply the brakes when there is the normal predetermined brake clearance. Should the normal clearance be decreased, e.g. by shrinkage of the brake drum, the brake will be applied before the actuator 31 engages wall 37, the valve member 43 is raised by pressure on surface 52 and since the pressure on either side of the actuator balances the spring 55 moves the actuator against wall 37, fluid flowing through port 38. Should the drum shrink to exert a pressure on the brake shoes an increase in pressure in chamber 53 results to open valve 43 and bleed off some of the fluid, the brake shoes then being in light rubbing contact with the drum, normal brake clearance being attained by a pedal depression creating brake application before actuator 31 engages wall 37, as above. In Fig. 3 (not shown), the valve member is replaced by a synthetic plastic body, e.g. nylon, sliding in a bell-shaped housing fixed to the actuator. Specification 833,857 is referred to.
Patent GB-1418249-A (GB)
Title: Method and apparatus for treating tubular fabrics
IPC: D06B3/10
Filed: 1974-08-05
Abstract: 1418249 Squeezing wet tubular fabrics E I ARONOFF 5 Aug 1974 [25 Feb 1974] 34405/ 74 Heading D1L Ballooning wet tubular fabric is squeezed following passage of the fabric F between pairs of spaced apart rollers 18, the distance between the rollers being grater than the total thickness of the flattened fabric. As shown fabric F, following stretching at 10 and wetting in bath 14, is passed vertically through three pairs of spaced apart rollers 56, 58 and 60, prior to being squeezed by rollers 20.
Patent GB-367031-A (GB)
Title: Improvements in and connected with apparatus for counting and indicating the movements made by engines or machines
IPC: G06M1/04
Filed: 1930-11-15
Abstract: 367,031. Counting-apparatus. CHADBURN'S (SHIP) TELEGRAPH CO., Ltd. and BAMFORD, A. C., Cyprus Road, Bootle, Lancashire. Nov. 15, 1930, No. 34412. Divided on 368,268. [Class 106 (i).] The electromagnetic actuation of a revolution counter is effected by a pawl 6 radially slidable in a shaft 7 rocked by a spring-controlled lever 9 linked with the core 3 of a solenoid energized intermittently from the engine e shaft. The pawl is pressed towards the ratchet wheel 4 by a spring finger 13 secured to the shaft, and overthrow is prevented by a stop pin 15 carried by an arm 16 of the shaft 7.
Patent GB-1115455-A (GB)
Title: Internal combustion engine-generator assemblies
IPC: F02B37/18
Filed: 1965-08-11
Abstract: 1,115,455. Regulating; gas turbine engines. NORDBERG MANUFACTURING CO. Aug.11, 1965 [Aug. 11, 1964], No.34419/65. Headings F1B and F1G. The output of an engine-driven generator 41 is measured to give a signal which is compared in a control 50 with a signal representing the pressure of the air supplied to the engine, the output from the control 50 being used to adjust the pressure of the air supply to the engine to a valve appropriate to the generator output. Fig.1 the engine is a supercharged piston engine and the pressure of the air supply is controlled by controlling a valve 32 in a by-pass around the exhaust-driven turbine 13 driving the compressor 15. The generator output signal is converted by a transducer 44, Fig. 2 (not shown) to a pneumatic signal which is compared in a comparator 75a with a signal indicative of the intake manifold pressure of the engine measured at 81. The difference in the signals controls the valve 32 to adjust the manifold pressure until the signals in the comparator are equal. In Fig. 3, the generator is driven by a gas turbine 84 and the control device 92 controls the pressure of air supplied by the compressor 87 to the combustion chamber 88. In a modification Fig. 4 (not shown) the compressor 98 is driven by a low pressure turbine 100 driven by the exhaust from a high pressure turbine 94 driving the generator and the air supply to the combustion chamber 104 is adjusted by controlling a by-pass around turbine 100.
Patent GB-344340-A (GB)
Abstract: 344,340. Centrifugal switches for internal-combustion engines.-AIKEN, R. J., Ard Aluinn, Clarence Avenue, Londonderry, Ireland. Oct. 28,1929, No. 32639. [Class 38 (v).] Centrifugal switches for opening the ignition circuit of a motor vehicle when the engine is at rest, comprise a governor d preferably on the commutator shaft linked by means of links n to a spring- controlled rod h which, at a certain engine speed, moves a lever k about its pivot k<1> and allows a contact on a resilient arm m to make the circuit. An independent manual switch may be fitted to the self-starter of the engine. The Provisional Specification refers also to other forms of governor.
Patent GB-1188314-A (GB)
Title: Improvements relating to the Sealing of High Pressure Vessels
Inventor: CAMPBELL WILLIAM HENRY
IPC: F16J10/02
Filed: 1967-07-26
Abstract: 1,188,314. Seals. VICKERS Ltd. 26 July, 1968 [26 July, 1967], No. 34476/67. Heading F2B. A pressure vessel for hydrostatic extrusion has a flexible attachment on its end face incorporating a back-up ring 4 for supporting the load of the sealing ring means 2 (such as described in Specification 1,188,313), the back-up ring being urged against the end of the vessel under a pressure which is greater than that of the pressure fluid 3 in the vessel. A load transmitting member acts between the pressure fluid and the back-up ring 4 and is formed either as a nose 3 or as a separate piece 3b. The back-up ring 4 or 4a is loaded against the end face of the vessel by a flexible beam 7. In another embodiment, Fig. 2 (not shown), the back-up ring (4a) is loaded by a flexible plate (12); to load the back-up ring, hydraulic fluid is supplied to the space (15) to flex the plate away from the end face of the vessel and permit the back-up ring to be screwed down a certain amount so that when the fluid pressure is released the back-up ring will move into contact with the end face at the required pressure.
Patent GB-469168-A (GB)
Title: Improvements in or relating to removable lids or covers for cans, tins or like containers
Filed: 1936-12-16
Abstract: 469,168. Tins. BARSTAD, A. T. G. Dec. 16, 1936, No. 34633. [Class 66] A cutter 5<1> for the tagger cover 2 of a tin is formed by slitting the flange 31 of the lid 3 at 5 and pressing inwardly the triangular portion so formed. To prevent outward bending of the cutter the part of the flange above the root is reinforced by forming therein a depression 4 preferably extending to the upper edge of the flange.
Patent GB-342406-A (GB)
Title: A new and improved means of assembling bevel gears
IPC: F16H1/14
Filed: 1929-11-13
Abstract: 342,406. Toothed gearing. COVERLEY, R. H., Glenroy, Clarence Road, Derby. Nov. 13, 1929, No. 34678. [Class 80 (i).] Relates to a method of and apparatus for facilitating correct assembly of bevel gearing. The bevel wheels b, a, for example of hypoid type, are first assembled in an apparatus in which driving and driven shafts b<1>, a<2> are subjected to load &c. conditions similar to those encountered in actual working, the wheels being ground &c. to accurate mesh. Their relative positions are then determined by the use of a gauge c, d, c<1>, e which determines the distance of the pinion b from the axis of the wheel a, and which may be so modified as also to determine the distance of the wheel a from the axis of the pinion b. Preferably, however, the latter determination may be replaced by an operation which registers on an indicator #<4> the backlash between the wheels. The wheels are then reassembled in the machine in which they are to be used, for instance in the back axle drive of a car, and by use of the gauge and by adjusting the wheels axially until the backlash is the same as that previously determined, they can be caused to assume the same positions that they occupied in the testing apparatus. In testing the backlash in the axle casing, a pivoted detent preventing rotation of the wheel a is used.
Patent GB-305771-A (GB)
Title: Improvements in electrical filters
IPC: H02M1/14
Filed: 1927-12-22
Abstract: 305,771. Carpenter, R. E. H. Dec. 22. 1927. Converting pulsating currents into steady continuous currents.-The input a, b from D.C. mains or rectifiers AC is connected to valve anode supplies f, h through the usual chokes c, k and shunt condensers e, d, l. Such an arrangement suppresses voltage fluctuations between the mains, but does not suppress fluctuations between the main and earth, which may be objectionable if the apparatus supplied is connected directly or through a condenser to earth. An additional choke in the negative lead b would suppress these fluctuations, but as the cathodes cannot be electrically separated owing to there being a common heating supply, only one choke could be used and back-coupling would be produced Therefore a double choke m, n wound on a common core o is used, the windings being arranged in opposition, so that the flow and return currents produce no flux in the core, but fluctuations to earth will produce a choking effect.
Patent GB-602578-A (GB)
Title: Electrical equipment for subterranean gasification installations
IPC: A62C3/04
Filed: 1945-12-21
Abstract: 602,578. Destructive distillation in situ. DEMART, P. Dec. 21, 1945, Nos. 34726, 34727, and 34728. Convention dates, May 9, 1944, June 10, 1944, and July 6, 1944. [Class 55(ii)] [Also in Group XXXVII] In a subterranean gasification installation comprising a panel 1 bounded by galleries 2 communicating with air admission galleries 3, electric circuits including 2-wire lines 4, 5, and one or more ignition devices 13 are arranged and sections 10, 11, of bare resistance wire in the path of the fire zone 7 are connected end to end by fusible nipples which break the circuit as the zone approaches. The wires 10, 11, are spaced by insulating supports having fusible elements, (see Group XXXVII), which on a rise in temperature caused by the fire zone produce a short circuit so that the decrease in resistance which is measured in a laboratory 8 on the surface enables e.g. points 26, 27, to be determined and the line of fire known. The insulating supports also include a second fusible element breaking the circuit when the temperature rises further.
Patent GB-410432-A (GB)
Title: An improved process for spooling freshly spun artificial silk
IPC: D01D7/00
Filed: 1932-12-11
Abstract: <PICT:0410432/IV/1> In a process for spooling freshly spun wet artificial silk the filament 4 is guided by means of a roller 5 to a twisting spindle 1 which is driven so slowly that a twist is imparted to the filament of only at most 20 turns per metre.  The silk passes over the roller 5 and through a guide eye 6 and is spooled on a bobbin 2 mounted on the spindle 1 and centred by a cap 3.  The twisting is effected by a traveller 7 mounted on a ring 8 moved up and down by a lifter device 9.
Patent GB-905415-A (GB)
Title: Industrial safety belts and straps
Inventor: SHAND THOMAS GEORGE
IPC: A62B35/00
Filed: 1958-12-01
Abstract: 905,415. Belts and straps; buckles. BARROW HEPBURN & GALE Ltd. Nov. 27, 1959 [Dec. 1, 1958], No. 34854/59. Classes 43 and 141. In a belt or strap including a friction-type buckle 9 through which a part of the belt &c. has been threaded, a stop-bar 10 is secured to the threaded end to prevent this end being completely withdrawn through the buckle, the stopbar being sufficiently long to project beyond opposite edges of the belt &c. The bar 10 is of wood or metal and has enlarged ends and the end of the strap is looped round the narrow part of the bar and stitched to itself. A retaining loop 5 is passed through the loop in the strap and round the main part of the strap to retain the threaded end in position. In Fig. 2 the buckle connects two strap sections 7, 8, each having a snap hook 11 at its free end for connection with D-rings on a workman's safety belt. In another embodiment (not shown) a nylon waist-belt has one end permanently secured to a buckle and its other end threaded through the buckle and provided with a stop-bar. Alternatively both ends of the belt may be threaded through a double buckle and provided with stop-bars, as in Specification 905,414. The buckle comprises a rigid frame in which are journalled two eccen trically-shaped gripping components which cooperate with the adjacent margins of the frame to grip the respective parts of the belt. In a further modification the double buckle is re placed by two separate buckles on a short length of webbing. The belt may comprise a closed ring or have a hook-and-eye fastening. Specification 738,989 also is referred to.
Patent GB-364263-A (GB)
Title: Improvements in and relating to cut-out insulators for electrical purposes
IPC: H01B17/14
Filed: 1930-11-20
Abstract: 364,263. Couplings ; fusible cut-outs. RAINS, A. B., (trading as CHAPMAN, E.), 146, Bishopsgate, London. Nov. 20, 1930, No. 34977. [Class 38 (i).] The base a of an insulator enclosing a fuse for mounting outdoors has a central screw-threaded hole a<1> to receive a supporting pin. The base is hollow and contains contacts b bent to S-shape and connected to the line conductors that enter from below through holes a<4>. A lip e surrounding the well a<2> in the base is gapped at c to pass the ends of a barrier d<1> on the cover d, the cover being then secured by rotating it. Contacts f on the cover carry a fuse wire that runs longitudinally through a hole g in the barrier d<1>. The rotational movement of the cover brings the contacts f under the upper limb of the contacts b and completes the circuit.
Patent GB-448448-A (GB)
Title: Improvements in or relating to modulated carrier wave receivers
IPC: H03D3/00
Filed: 1934-12-06
Abstract: 448,448. Wireless receiving systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Crosby, M. G.; Riverhead, Long Island, New York, U.S.A.) Dec. 6, 1934, No. 35113. Convention date, Dec. 27, 1933. [Class 40 (v)] Relates to receivers for phase or frequency modulated carrier waves and comprises dividing the received energy into two portions the degree of modulation of one portion being reduced by frequency division before combination with the other portion in correct relative phase to produce amplitude modulation. In one embodiment, Fig. 1, the energy from the aerial A passes to a radio frequency amplifier 1, frequency changer 2, intermediate frequency amplifier 3 and amplitude limiter 4, the output from which is divided into two portions. One portion is fed to a multi-vibrator frequency divider 5, the circuit of which is shown in Fig. 5, the divided frequency being restored to the original intermediate frequency by a heterodyne frequency changer 6, passed to phase adjusters 7, 14 and fed in push pull through transformer 15, to detector valves 17, 18. The other portion of the divided output from the limiter 4 is fed in parallel to these valves through transformer 16, the outputs from the valves, one of which may be reversed in phase by the switch 19, being combined in the transformer 20 feeding the utilization means 21. A further pair of detectors 8, 9 similarly fed produce potentials which are applied to control the frequency of the local oscillator of the frequency changer 2. The receiver may be adapted to receive amplitude modulated signals by placing the switches S, S1 in their second position which applies the output direct from the amplifier 3 to the detectors. In a second embodiment, Fig. 4 (not shown), the portion of the signals which is divided in frequency is not reconverted to the intermediate frequency but is combined with a second portion which is reduced to the same frequency by heterodyning. U.S.A. Specification 616,803 is referred to.
Patent GB-1193448-A (GB)
Title: Improvements in or relating to Arc Welding Power Supplies
Inventor: BALCHIN NIGEL CECIL
IPC: B23K9/09
Filed: 1967-08-01
Abstract: 1,193,448. Arc welding supply systems. NATIONAL RESEARCH DEVELOPMENT CORP. 28 Oct., 1968 [1 Aug., 1967], No. 35201/67. Heading H2H. Arc welding power supply can be used either in a continuous current mode or in a pulsed mode. Rectifier pairs RF1, RF2 are connected between each phase of a transformer TS and output terminals T1, T2. In series with each rectifier is a resistor R1, and thyristors TR1, TR2 are connected across each series combination of a rectifier and a resistor. A pulsed output can thus be obtained through the thyristors, a background current through the rectifiers and resistors being supplied when the thyristors are blocked. To obtain a continuous high current output, switches S1-S6 are closed to by-pass the current-limiting resistors R1 so that the full current flows through the rectifiers. The circuit may be modified to reduce the number of resistors and thyristors needed, and a diode may be connected between the centre point of the transformer TS and an output terminal in order to strike the arc.
Patent GB-1024598-A (GB)
Title: Interferometric inspection apparatus
IPC: G01J3/453
Filed: 1964-08-27
Abstract: 1,024,598. Selective signalling. E. I. DU PONT DE NEMOURS & CO. Aug. 27, 1964 [Aug. 27, 1963], No. 35235/64. Heading G4H. [Also in Divisions G1 and G2] To determine the thickness of a travelling film 10<SP>1</SP> two beams of light reflected from the top and bottom faces of the film are made to constructively interfere by shortening the optical path of one beam by means of a reciprocating mirror 30<SP>1</SP>, the position of the mirror, and hence the instant in its cycle, at which interference takes place indicates the film thickness. The two beams are split by a 45-degree half-silvered mirror 32<SP>1</SP> on to the fixed mirror 311 and moving mirror 30<SP>1</SP>. At the position of the mirror 30<SP>1</SP> which compensates for the additional optical path in the film, light of one beam from the fixed mirror and light of the other beam from the moving mirror constructively interfere and initiate a pulse in the detecting circuit. The instant at which this occurs gives a measure of the thickness of the film. The timing of this interference is based upon a fixed reference pulse created during each cycle of the mirror when light from each beam individually constructively interferes. In the arrangement shown the moving mirror is offset so that the reference interference is not produced. The single pulse per cycle is superimposed upon an oscillator 70 input to a bistable multivibrator 79 and is centred upon it  for the nominal thickness of the film, any time  deviation by the pulse from the oscillator input indicates a change from the nominal thickness. In another arrangement (Fig. 6A, not shown) the reference pulse and the varying pulse are used to start and stop a clock-driven counter to give a measure of the thickness of the film. Instead of using a clock the counter pulses may be provided by using a source of monochromatic light to give a large number of constructive interferences per cycle of the mirror. In an alternative inferometer (Fig. 5, not shown) the additional optical path is changed by angularly moving the mirror. The main source of light delivers infra-red radiation for a lead sulphide photoresistor. (Refractive index and bi-refringence.may also be measured.)