baber/WOPTO huggingface dataset:
Patent GB-760743-A (GB)
Title: Improvements relating to electric contact spring assemblies
Inventor: SMITH SIDNEY CHARLES
IPC: H01H50/58
Filed: 1954-04-21
Abstract: 760,743. Electromagnetic relays. SIEMENS BROS. & CO., Ltd. April 7, 1955 [April 21, 1954], No. 11442/54. Class 38(5) The moving springs 2, 4, 7 and fixed springs 1, 3, 5, 6 of a contact pile-up each have a similar-shaped opening 12 for receiving an operating stud 9, and elongated holes 11 for receiving tubular bosses. 15 on the insulating spacer 8. The openings 12 in the moving springs are situated further from the free ends of the springs than are the openings 12 in the fixed springs; similarly the holes 11 in the fixed and moving springs are relatively displaced. In assembly, the springs are initially arranged as shown in Fig. 1 and the stud is passed through the openings 12 to engage the relay armature 10, the springs 2, 4, 7 then being moved to the left in which position they are received in the notches in the stud 9 and the co-operating contacts are opposite one another (Fig. 2, not shown), and the screws 16, 17, 18 are tightened. Alignment of the springs is facilitated by passing a pin 14 through holes 13. In a modification (Figs. 3, 3A, not shown), the comb 9 is replaced by a rod having collars, and the openings 12 are circular.
Patent GB-142461-A (GB)
Title: Improvements in or relating to injectors
IPC: F04F5/46
Filed: 1920-04-24
Abstract: 142,461. Steffner, K. O. April 26, 1919, [Convention date]. Giffard injectors; overflow arrangements; regulating or controlling action.-In an injector in which all the nozzles are combined to form a unitary set, the operation of turning the steam on or off causes the set to be slid axially in the casing in opposite directions and thus prevents the accumulation of scale which would jam the nozzles. The nozzles a, b, c, d are combined and loosely mounted in guides e, f in the casing of the injector. Rotation of the valve rod h, which is provided with a screw i and with a shoulder g to prevent longitudinal motion, causes the nozzles to move from the position in which the steam cone k is seated to the position in which a valve n formed on the cone d, is seated at m, thus preventing water from passing from the chamber q to the overflow, but allowing it to pass to the boiler.
Patent GB-623318-A (GB)
Title: Improvements in carrier bags
IPC: B65D33/12
Filed: 1947-04-29
Abstract: 623,318. Handles for carrier bags. BIBBY & BARON, Ltd., and WIGGLESWORTH, G. L. April 29, 1947, No. 11471. [Class 133] Through the top of a carrier bag folded over strengthening strips b having two pairs of holes on each side, twine e is passed through one hole d of a pair from the outside to the inside, then through the other hole c, up the outside of the bag, over the twine on the outside, down the inside and under the piece between the holes c, d on the inside. Alternatively, the twine e is passed through the hole c from the inside outwards then up on the outside, around the twine in a plain or cross-over loop at the upper edge, down the outside, through the hole d and beneath the piece of twine between the hole c and the loop on the inside. As regards the inside and outside of the bag, these arrangements may be reversed.
Patent GB-963432-A (GB)
Title: Improvements in or relating to spacer springs for visible card index systems
IPC: B42F17/02
Filed: 1961-03-29
Abstract: 963,432. Card indexes. RUEGG-NAEGELI & CIE A.G. March 29, 1961 [March 31, 1960], No. 11580/61. Heading B6E. [Also in Division F2]  A spacer spring 15 for insertion in tab slots 14 in the folded edge 13 of a visible index card 11, 12 comprises a spring blade which is curved in its longitudinal, and folded in its transverse, direction so as to form two oppositely-curved convex spring blades 17, 18 which spread the index card leaves 11, 12 apart a flattened part 16 at the fold of the spring being cut out to form two suspension heads 19 for engagement with the slots 14 and a slot 20 being cut into the blades between the heads 19. Each of the latter has an outwardly directed extension 21 for engagement behind the folded edge of the card 15.
Patent GB-770500-A (GB)
Title: Method for improving the water-resistant properties of plastic-bound fibrous materials
IPC: D21J1/08
Filed: 1955-04-22
Abstract: 770,500. Resin-bonded fibre-board &c. AKTIEBOLAGET STATENS SKOGSINDUSTRIER. April 22, 1955 [April 27, 1954], No. 11627/55 Class 96. Water-resistant wood-fibre boards or mineral wool mats are made by adding to pulp or to wet-felted fibre, e.g. by blowing as a fine mist thereon, a copolymerisate of phenol, alkyl phenols, and formaldehyde, containing up to 30 per cent of alkyl phenol groups as hydrophobic groups in the plastic molecule. The product may be pressed at 30 to 80 kg/cm<SP>2</SP> to obtain hard wall board. Butyl and octyl phenol, urea and melamine resins with alkyl groups, and modified alkyd plastics are mentioned.
Patent GB-477210-A (GB)
Title: Improvements in or relating to closures of glass jars and like containers
IPC: B65D53/02
Filed: 1936-04-23
Abstract: In a container closure having a cap of the pry-off or screw-off type, a gasket is employed obtained by drying down a latex containing a lubricant which does not soften the rubber. Lubricants specified include bees, paraffin, carnauba, candellila, Montan, or Chinese insect wax, oils or fats and liquid or solid glycerides such as castor oil and Japan wax which have no adverse effect on rubber. Other ingredients and fillers may be present. A preformed emulsion of the lubricant may be added to a latex composition or the lubricant may be emulsified therein. Specifications 335,559, [Class 70], and 402,623 are referred to.
Patent GB-539840-A (GB)
Title: Improvements in electric motor control systems
IPC: B60L9/04
Filed: 1940-07-13
Abstract: 539,840. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. July 13, 1940, No. 11677. Convention date, July 13, 1939. [Class 38 (iii)] [Also in Group XXXV] Traction or other motors 9, 10 are supplied from the line in series with a buck and boost machine 15 driven by a,line machine 17. The motors are accelerated and decelerated in five stages. Their fields and the field 26 of machine 17 are controlled by an exciter 30. During the first stage, field 33 of the exciter 30 is energized according to the acceleration of a pilot motor 78 driving a flywheel. During The second stage the motor current is prevented from exceeding a limiting value by deriving a voltage from a potentiometer 47 and applying it through a rectifier 45, to the field of a second exciter 41 which supplies through a rectifier 40 a reverse field 32 of the exciter 30. In the third stage the curent of the line machine 17 is prevented from exceeding a limiting value by deriving a voltage from a potentiometer 49 and applying it Through a rectifier 46 to the field of the exciter 41. During the fourth stage the voltage across the motors 10 is prevented from exceeding a limiting value, by deriving a voltage from a potentiometer 50 and applying it through a rectifier 65 to the field 32. In the final stage, the speed of the motors 9 are held at a limiting value by a tuned alternator 51 driven thereby supplying through a rectifier 61 the field of the exciter 41. During deceleration the reverse sequences obtain and give regenerative braking, a relay 69 opening at about 5 m.p.h. so that the pilot motor 78 and flywheel coast to rest. In order to keep the speed of the set 15, 17 constant. a tuned alternator 86 supplies through a rectifier 90 the field of an exciter 82 supplying the field 27 of the machine 15.
Patent GB-542247-A (GB)
Title: Improvements in or relating to the purification of vegetable fibres
IPC: D01C1/02
Filed: 1940-07-11
Abstract: 542,247. Refining cellulose materials ; treating textiles with liquids. SHOOTER. W. A., and MORROW, H. J., (trading as WOODBURN BLEACHING & DYEING CO.). July 11, 1940, No. 11693. [Classes 2 (ii) and 15 (ii)] Vegetable fibres in the form of plant material, raw fibre, or yarn, particularly fibres of the bast group, are purified by steeping them in a warm aqueous bath or equivalent to assist subsequent wetting out and penetration of treating liquid, and then immersing them in a warm alkaline solution containing a detergent. They are then washed and immersed in a warm size or batching preparation. The process is particularly applicable to the treatment of jute fibres. In an example, jute taken from bales is placed evenly in an open tank containing sufficient cold water to cover completely all the jute. The water is kept in motion and heated gradually to 90‹ F. and maintained at this temperature. The water is drained off and the jute is then treated with a solution containing 1-3 per cent. of sodium carbonate and about 0.5 per cent. of a detergent, e.g. " Tetralene " or " Unipon " (Registered Trade Marks), at a temperature of not more than 110‹ F. " Unipon " is a mixture of trichlorethylene and soluble oil. After this treatment the jute is removed and washed. It is then treated with a warm solution of a batching preparation comprising bleached palm oil and French chalk emulsified in water with ammonia. This solution may contain a little carbon tetrachloride rendered soluble by the addition of soluble oil and ammonia.
Patent GB-353013-A (GB)
Title: Improvements in or relating to battery charging arrangements suitable for use in petrol-electric and the like vehicles
IPC: H02J7/14
Filed: 1930-04-12
Abstract: 353,013. Battery charging systems. ARMSTRONG, WHITWORTH & CO. (ENGINEERS), Ltd., SIR W. G., 22, Gt. Smith Street, London, and BECKETT, C. M., 55, Wordsworth Drive, Cheam, Surrey. April 12, 1930, No. 11706. [Class 38 (iv).] In a battery charging system for electricallydriven vehicles such as petrol electric vehicles, the batteries are connected in series with one or more of the driving motors M1 .. M4 as shown in the Figure. A shunt coil 2 of the cut-out relay when the voltage of the generator G reaches a predetermined value closes contacts 4 to close the circuit of the motor contactor coils W1 .. W4 to close a circuit from the generator G through the motors and reversing switches MS1 .. MS4 and winding 1 to the battery B. Energization of shunt winding 2 breaks the circuit through the normally closed contacts 3 and the relay is then operated by the winding 1 until the motor current drops. The cut-out relay may, in a modification, be provided with two opposed shunt coils, one energized from the generator and one from the battery.
Patent GB-1088268-A (GB)
Title: Improvements in or relating to thermionic sources and to a method of producing same
Inventor: DURAND GEORGES
IPC: H03F1/52
Filed: 1965-03-19
Abstract: 1,088,268. Ion sources. COMMISSARIAT A L'ENERGIE ATOMIQUE. March 19, 1965 [March 27, 1964], No. 11756/65. Heading H1D. A thermionic ion source for use in mass spectrometry comprises a metallic heating filament coated with a layer of a refractory, stabilizing substance having a smooth surface, and an outer layer comprising a mixture of this substance and the sample to be analysed by mass spectrometry. The refractory substance reduces the rate of ion current decrease due to evaporation of the sample and may be TiP 2 O 7 , MgAl 2 O 4 , NiO or salts of Ca, Sr, Ba, Zr, Th and Hf. It may be deposited on a Pt, Re or W filament in the form of a gel and is subjected to slow calcination by passing a heating current through the filament. The outer layer is then applied and the aggregate is subjected to further calcination. The thickness of the filament coating may be between 0À2 and 1 mm., preferably 0À5 mm.
Patent GB-127149-A (GB)
Title: A New or Improved Chuck.
Inventor: ALLEN JAMES
IPC: B23B31/18
Filed: 1918-07-19
Abstract: 127,149. Allen, J. July 19, 1918. Chucks.-In a leverclosing chuck the levers b are pivoted in slots in a ring i screwed to the body of the chuck so as to be replaceable easily. The levers are actuated in one direction by a spring h and in the other by a wedgering d operated by a nut provided with a hand-wheel f. A ball thrust-washer g is fitted between the nut and the wedge-ring.
Patent GB-845484-A (GB)
Title: Improvements in or relating to apparatus for testing the isolation of an electrical conductor from a supply source
IPC: G01R27/02
Filed: 1958-04-14
Abstract: 845,484. Voltage testing. CENTRAL ELECTRICITY GENERATING BOARD, DOUGLAS, J. L., HASLER, E. F., and VICK, P. S. April 14, 1959 [April 14, 1958], No. 11832/58. Class (37). Apparatus for testing for the presence of a conductor energised from an A.C. supply source comprises a capacitative probe positionable at a safe distance from the conductor, an amplifier coupled to the voltage appearing between earth and the probe, and a rectifying and biasing circuit energised from the amplifier output which is operative as the A.C. output of the amplifier rises above a predetermined level to bias back the amplifier and thus to vary the mean unidirectional current flowing therein, which current is measured by indicating means marked with " safe " and " danger " indications. In Fig. 1 a conductive plate 4 with an insulating cover 5 shielded by a movable earthed screen 6 is connected to the grid of a pentode amplifier 1 with its circuit components and operating batteries enclosed in an earthed metal case apertured for the probe and for a moving coil D.C. meter 7 in series with the anode load 8; the amplified alternating output voltage across which is resistance capacitance coupled to a multi-element halfwave selenium rectifier 11 which is so designed that rectification only occurs when the applied voltage exceeds the value of that due to pick-up from an isolated but unearthed conductor under test at the appropriate probe distance therefrom. After resistance capacitance smoothing the rectified voltage is fed back over a series resistance and shunt capacitance to the return of high value gridleak 9 as negative bias to reduce the mean anode current of the pentode. Initially, with the probe screened or coupled to zero voltage, meter 7 gives maximum deflection corresponding to " safe ", and with a small pick-up voltage on the probe the mean anode current remains at this value until the alternating output of the amplifier reaches a critical value. Increase in probe voltage progressively biasses back the pentode to reduce its mean anode current until the valve conducts only at the peak of each cycle of the applied voltage, after which further increase produces negligible reduction in the meter reading, corresponding to " danger ". Fig. 2 shows the relationship between the test conductor voltage and the meter reading. In a modification (Fig. 3 not shown) the amplifier pentode may be replaced by a transistor. The amplifier may be transformer coupled to the rectifier, whose delay action may be obtained by applying a direct voltage bias thereto, and the probe may be capacitance coupled to the amplifier so that it may be directly connected to the test conductor. The probe insulation may be dimensioned to position it at a required distance from the test conductor. The apparatus may be utilized for testing the presence of high voltage D.C. by using a probe electrode having an oscillatory electrostatic screen as described in Specification 845,947.
Patent GB-1190333-A (GB)
Title: An Electrical Connection Device
IPC: H01R24/00
Filed: 1968-03-11
Abstract: 1,190,333. Two-part couplings. SIEMENS A.G. 11 March, 1968 [10 March, 1967], No. 11854/68. Heading H2E. In a plug 2 and socket 1 assembly (Fig. 1), comprising housings 5, 3 which have respectively a rib 7 (Fig. 8) and a co-operating groove 8 (Fig. 6) to permit assembly in one relative angular position only, and which enclose contact-carrying insulating inserts 9, 11, the inserts are positioned at angles dependent on the voltage to be used by securing them to intermediate elements 13, 14, which are preassembled in one of a selected number of positions. The intermediate elements 13, 14 are formed with a plurality of bores 16 and are secured to the housings by means of dowel-pins 17, and to the inserts by screws. The socket insert 9 contains contact sleeves 10 and the plug insert 11 corresponding contact pins 12. One sleeve and one pin are earthed, and the earthed contact is situated on a radius through the alignment means 7, 8 or at one of a fixed number of angles thereto. The intermediate elements 13, 14 may be circular flat plates or rings made of metal or insulating material. The plug insert 11 has a locating pin 27, so that on insertion into the plug housing 5, the element 14 only allows passage if the position of the pin 27 corresponds to the aperture 28. Since the element 13 has no such aperture, the insert 11 is prevented from entering the wrong housing. Closure covers 21, 22, screwed into and forming part of the inserts 9, 11, have, in their edge regions, marginal recesses 24 interrupted by supporting feet (25), through which screws attach the covers to the elements 13, 14 (Fig. 2, not shown), and to the tension relief means 32, a guiding projection of which 31 (Fig. 11, not shown) co-operates with a recess 30 in the inner edges of elements 13, 14, so that the insert is correctly aligned within the housing. The tension-relief means 32, which may be of a thermoplastics material, comprises a supporting arm 34 with fixed and mobile clip portions 33, 35 respectively, connected by a flexible web 39. The closure covers 21, 22 have slots 37 to accommodate bars 38 on the foot 36 of the means 32, the foot 36 being disposed between the associated insert and closure cover.
Patent GB-223261-A (GB)
Title: Improvements in and relating to wall and like structures
IPC: E04B2/28
Filed: 1924-02-04
Abstract: 223,261. Elgood, E. J. Feb. 4, 1924. Building blocks, special shapes of.-T-shaped blocks are provided with a plurality of holes 7 in the stems 3, and grouting grooves 5, 6 are formed all round the heads 2 and stems.
Patent GB-527755-A (GB)
Title: Pressure actuated magazine pencil
IPC: B43K21/22
Filed: 1939-04-20
Abstract: 527,755. Pencil holders. BOSSERT, C. April 20, 1939, No. 11890. Convention date, June 2, 1938. [Class 146 (iii)] A magazine pencil, wherein the lead is adjusted step by step by means of a self-opening clamp at the rear and a self-closing clamp at the front, has a sleeve 13 which forms the clamping ring 12 for the rear-clamp and is shiftable transversely to the longitudinal axis of the pencil-case to allow of eccentricity in the mechanism or the lead 18. A reciprocable magazine 4 is closed by a funnel-member 6 leading to the lead-guide 7 to which is attached the self-closing clamp 8, locking the ring 19. The rear clamp comprises a ring 9, frictionally slidable on the guide 7 and gripping the lead 18 through slots 11 by arms 10. The clamp 9, 10 is reciprocable but its motion is limited by the end face 17 of the guide 2 and the coneshaped bore of an encircling sleeve 13, which is pressed upon the face 17 by a spring 14 and is a slack fit to permit of transverse motion. The arms 10 are diametrically opposed and if the lead is eccentric, the sleeve 13 is displaced and closes the arms 10 with equal force on the lead 18, so avoiding fracture.
Patent GB-761450-A (GB)
Title: Improvements in electric generating equipment
Inventor: ROSS WILLIAM SCRYMGEOUR
IPC: H02K7/18
Filed: 1954-04-26
Abstract: 761,450. Generating arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. April 26, 1955 [April 26, 1954], No. 12020/54. Class 38 (4). The supply of working fluid to a prime-mover 2 driving a generator 1 is controlled by a main valve 3 which is provided with a by-pass valve 6 for allowing admission of a limited supply of working fluid for starting purposes, the opening of the main valve being controlled by an electric actuator 4 responsive to the generator voltage and operating in such a manner that the main valve is only operable to its fullest extent when the generator voltage has reached its operational value, or nearly so. In the arrangement shown, the by-pass valve 6 is opened to start the prime-mover by a solenoid 7 which is energized from an auxiliary supply 13 upon operation of a switch 16. A circuit breaker 9, 10 responsive to generator voltage connects the generator to the load circuit 8 when the voltage has built up to operational value, the circuit breaker also energizing the actuator 4 to open the main valve 3. A tripping relay 11, 12 for the circuit-breaker may operate either in response to operation of a switch 14 connected to the auxiliary supply 13, or to excessive voltage output from a tachometer generator 20 driven with the machine 1. The actuator 4 may include an hydraulic servo device controlled by a governor 18 which is also driven with the machine 1. In a modified arrangement the actuator 4 is controlled by a relay 19 set to pick-up at a voltage below that of the circuit breaker 9, 10, so that the main valve is fully opened before the generator is connected to the load. Specification 708,863, [Group XXIX], is referred to.
Patent GB-1091502-A (GB)
Title: Semi-conductor devices
Inventor: GRIFFITHS GEOFFREY WILLIAM
IPC: H01L29/00
Filed: 1964-03-21
Abstract: 1,091,502. Semi-conductor devices. PYE Ltd. March 18, 1965 [March 21, 1964], No. 12045/64. Heading H1K. A semi-conductor device comprising alternating N and P type regions on a substrate is produced by applying dopant of a first conductivity type through perforations in a resist, masking selected perforations, applying dopant of opposite type through the remaining perforations and then removing the resist and mask. In the embodiment, an N-type layer 2 is diffused into a P-type germanium body 1 and lead-antimony deposits 9, 10 are electro plated through holes in a photo-resist mask 4. Deposit 10 is then covered with picene wax mask 11 and a mixture of aluminium and gallium deposited to form a layer 12. The resist 4 and mask 11 are removed to leave deposit 9 covered with aluminium layer 12, and deposit 10. The assembly is heated to alloy the impurity materials with the semi-conductor body to form emitter P-type zone in the N-type layer 2 under deposit 9, and an ohmic contact at 10 to N-type base layer 2. The P-type portion of body 1 forms the collector zone of the transistor.
Patent GB-170548-A (GB)
Title: Improvements in electrical transformer tanks having an oil bath or other like receptacles
IPC: H01F27/14
Filed: 1921-04-27
Abstract: 170,548. Ateliers de Constructions Electriques de Charleroi, Soc. Anon. Oct. 20, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Tranformers.-In a tank A for containing insulating-oil or the like to be kept out of contact with the air, for example an electric transformer tank, access of the oil to the cover joint c of the tank is prevented by providing between the joint and the oil an air space E with a restricted surface in contact with the oil. For this purpose the cover is made in the form a dish-shaped plate C partly immersed in the oil, an annular air space E being left above the surface of the oil between the cover and the wall of the tank. The terminals D of the transformer may be mounted on a hollow socket on sleeve d fixed to the cover C, the height of the socket being sufficient to prevent the level of the oil from reaching the sealing- joint c<1>. The tank may be provided with an expansion chamber B, Fig. 2, or the space E may itself serve as an expansion chamber if the joints c are not hermetically closed. In the latter case, the cover C is preferably made with inclined walls as shown in Fig. 3.