baber/WOPTO huggingface dataset:
Patent GB-1394494-A (GB)
Title: Clamping trestle stand
IPC: B25H1/06
Filed: 1973-04-13
Abstract: 1394494 Trestles GEORG FRITZMEIER KG 13 April 1973 [14 April 1972] 17941/73 Heading A4H A trestle stand, Fig. 1, comprises legs pivoted intermediate their ends at 1, the upper arms 2 so formed pivotally mounting at 18 clamping jaws 17, and the lower arms 3 so formed being connected by pivoted links 9, 11, the total length of the links 9, 11 being adjustable to alter the distance between the clamping jaws 17 by a peg 13 engaged in selected aligned bores 14 in the links 9, 7. In a modification, Figs. 5-7 (not shown), the total length of the links (41, 42) is adjustable by a pin (46) on one link (42) engaging in a selected notch (45) in the other link (41), and a spring-loaded peg (48) on the other link (41) engaging in a selected hole (50) in the one link (42). In another form, Fig. 3, the legs 20 are joined intermediate their ends by U-bands 35 rigid with the legs 20 and connected together at an adjustable distance by a peg 37 engaging in selected aligned bores 36. The lower arms are connected by pivoted links 29, 31 whose effective length is adjustable by altering the angle between said links.
Patent GB-1353863-A (GB)
Title: Apparatus for analysing the transmission characteristics of a quadripole energised by a pulse modulated high frequency wave
IPC: H04B3/46
Filed: 1972-04-18
Abstract: 1353863 Testing four terminal networks SOC LANNIONNAISE D'ELECTRONIQUE 18 April 1972 [19 April 1971] 17958/72 Heading G1U A quadripole X, (such as a band pass filter) Fig. 1, is tested by applying to it a modulated 12 carrier 1, by sampling 2, 2', both the unmodulated carrier and the output of the quadripole resulting from the application to it of the modulated carrier, by band pass filtering 3, 3' the signals resulting from sampling, and by comparing 13a, 13b the amplitudes and phases of the filtered signals, the resulting difference signals being displayed either on a dual-beam c. r. t. 14, or as a polar diagram 17. The modulation applied to the carrier takes the form of repeated short sequences of discrete phase shifts, each sequence occurring within the duration d2 of a control pulse J2 from a unit 10, and at the same frequency as short duration d1, sample control pulses J1. Thus, one sample occurs during each modulation sequence, but because of the presence of a controlled delay device 9, the modulation sequences are progressively delayed and the sample instants therefore precess within the repeated modulation sequences. Synchronization of the modulation sequences and the sampling with the carrier signal 1, is achieved by a loop including a phase comparator 5, a reference oscillator 6 and a controlled oscillator 7. As described the carrier frequency f0 is 500Mc/s. This is sampled 2 by short pulses J, at a p.r.f. of f2 equal to 2. 0004 Mc / s. Band pass filter 3 is centred upon a frequency f1 of 100 kc/s which is the frequency at which the 250th harmonic of f2 beats with f0. (250f2 - f0 = f1). The phase comparator 5 so controls the oscillator 7 that the phase of the filtered signals is identical to that of the reference oscillator 7, which results in the desired relationship between the signal f2 from oscillator 7 and the carrier signal f0. The signal f2 is used to produce the signals J1 and J2, and the signals J2, each of which causes a modulation sequence to be applied to the carrier f0, are progressively delayed under the control of a linear time base 15, which also provides a horizontal sweep voltage for the dual-beam c. r. t. 14.
Patent GB-708833-A (GB)
Title: Improvements in or relating to high frequency electrical oscillators
IPC: H01P7/04
Filed: 1951-07-30
Abstract: 708,833. Impedance networks. GENERAL ELECTRIC CO., Ltd., and FOOT, J. B. L. July 17, 1952 [July 30, 1951], No. 18005/51. Class 40 (8). [Also in Group XL(c)] An oscillator for the generation of high frequency electrical signals comprises, as a frequency determining circuit, a resonant cavity and a piece of dielectric material 9 disposed at least partly within the cavity and mounted eccentrically upon a shaft 10 so that the output frequency of the oscillator may be varied over a small range by rotation of the shaft. The oscillator comprises a disc-seal triode 1 having its anode-grid circuit and grid-cathode circuits coupled to short-circuited co-axial line elements comprising cylinders 2 and 3 and cylinders 3 and 4 respectively, the two elements being coupled together by an adjustable probe 5. Output from the oscillator is taken by means of a loop 6 and co-axial line 7. Coarse tuning of the oscillator is provided by means of a metal tuning screw 8 and a further fine-tuning control is provided by the dielectric member 9 which preferably comprises a circular plate eccentrically mounted upon the shaft 10. The shaft 10 may be rotated either manually or by means of an automatic frequency control circuit as described in Specification 666,088, [Group XXXV].
Patent GB-237100-A (GB)
Title: Manufacture of purified 1-nitro-2-methylanthraquinone
Filed: 1924-07-28
Abstract: Pure 1-nitro-2-methylanthraquinone is obtained from the crude product by heating its aqueous suspension with a sulphite, e.g. sodium sulphite.  The isomers pass into solution in the form of sulphonic acids and can be removed by filtration.  The purified product gives immediately with sodium sulphide pure 1 - amino - 2 - methylanthraquinone, the bromine and other derivatives obtained therefrom being stated to melt at 40-50 DEG  C. higher than has hitherto been stated.
Patent GB-843999-A (GB)
Title: Information storage unit
IPC: G11C13/06
Filed: 1958-06-06
Abstract: An information storage unit (see Group XIX), comprises a film of magnetically polarized crystalline material so prepared as to contain an operative area throughout which the crystals are magnetically orientated in the same direction, the material being such that it rotates the plane of polarization of light in one direction or the other according to whether or not the magnetic polarity has been reversed.  As described, the film comprises an intermetallic compound of manganese and bismuth supported on a glass plate.  The film is prepared by first depositing on the plate by vacuum evaporation a layer of manganese, similarly depositing a layer of bismuth, and then heating the layers in vacuo up to 300 DEG C. to form the crystalline compound.  Finally the film is uniformly magnetized, in a direction normal to its surface, by an electromagnet applying a field of the order of 3,000 oersteds.  It is stated that a film having a thickness of 1,000 Augstrom units transmits 20% of the incident light and rotates the plane of polarization through an angle of 5 degrees. Specification 789,660 is referred to.
Patent GB-706299-A (GB)
Title: An improved device for the testing of the electrical circuits of a power driven vehicle
IPC: G01R31/00
Filed: 1952-07-18
Abstract: 706,299. Testing for faults. TULL, R. G. July 18, 1952, No. 18206/52. Class 37 A testing device for the electrical circuits of automobiles &c. includes a plurality of terminals T1 ... T7, of which at least two pairs T2, T5 and T3, T5 have a common terminal T5 and may be bridged alternatively by a resistance RA or an armature test stand ATS, a main selector switch MS for selective interconnection of the terminals with test instruments, and a push-button switch PBS for connecting one terminal T1 directly to earth. The test instruments comprise a voltmeter VM, an ammeter AM, a buzzer BZ, and a millivoltmeter MVM which may be shunted by either the whole or half of a resistance BPR by means . of a switch BAS. A double-pole on-off switch OS and a variable current control resistance CR are also included. The terminal T7 is connected by a lead 2 to the positive terminal of a battery, the terminal T6 being earthed. A component CUT, such as a resistance, to be tested is connected to the terminal T1 and the resistance RA is bridged across terminals T3, T5 with a link RAL bridging terminals T4, T5. The switch MS is set to position 1 closing a circuit from the battery through the ammeter AM, resistance RA, current control CR, and component CUT to earth. In parallel with the resistance RA is the voltmeter VM which gives a certain reading if the component CUT is in order and there is no disconnection. The buzzer BZ is connected in circuit with the component CUT by setting the switch MS to position 2. Variation of tone of the buzzer when the push-button switch PBS is depressed to earth the terminal T1 indicates the condition of the circuit under test. For testing an armature the resistance RA and link RAL are removed and the armature test stand ATS is connected between terminals T2, T5 with the armature commutator C in position in the cradle of the stand ATS. A circuit is completed from the battery through the armature, current control CR, ammeter AM, and terminal T1 which is connected to the other battery terminal. Spring contacts FBC are connected to terminals T3, T4 and engage adjacent segments of the commutator, the voltage between which is measured first on the voltmeter VM and then on the millivoltmeter MVM shunted by BPR and finally with the shunt disconnected. Specification 476,303 is referred to.
Patent GB-734420-A (GB)
Title: Improvements in or relating to electrical capacitors
Inventor: ANDREWES HUMFREY
IPC: H01G4/32
Filed: 1952-07-18
Abstract: 734,420. Capacitors &c. DUBILIER CONDENSER CO. (1925), Ltd. Oct. 14, 1953 [July 18, 1952], No. 18231/52. Class 37. In the manufacture of roll capacitors of the leadthrough type wherein the alternate windings are brought out at. opposite ends of the roll, a gauze disc is pressed on one or each end of the roll and has its edge splayed into contact with an electrode to which it is soldered, the gauze being flooded with solder in the process. A roll capacitor B is assembled on insulating sleeve B1 on mounting bolt A between ceramic bushes E and G. At the upper end sleeve B is cut off short and gauze I splayed into contact with bolt A and flooded with solder, while insulating washer E1 separates the gauze from the bush. At the other end gauze J with a central clearance hole J1, has its edges splayed over the shoulder of bush G, and a metal sleeve D which at its upper end is soldered to metallized portion E2 of the upper bush, is soldered to the gauze J at the shoulder while the end cap which completes the casing is soldered at D6 to bush G. The unit is completed by resilient sealing washers F, H which are forced into engagement with bolt A by nuts F1, H1 respectively. Specification 656,720 is referred to.
Patent GB-1022978-A (GB)
Title: Improvements in thermocouple probe
IPC: G01K7/04
Filed: 1964-05-01
Abstract: 1,022,978. Thermocouples. GENERAL ELECTRIC CO. May 1,1964 [June 4, 1963], No. 18254/64. Heading G1N. The element wires 16a, 16b of a thermocouple are soldered to a rigid cylindrical housing 13 at the hot junction 17, and located in rectangular or oval-shaped slots in an insulator 14 so that relative movement between the wires and the housing due to differential expansion does not produce mechanical strain on the wires between the junction 17 and the point 18 where the wires are gripped in a flexible portion 12. The thermoelectric element wires 16a, 16b may be tungsten-tungsten rhenium, the housing 13 may be sintered iridium, the sheath 22 of the flexible portion 12 may be platinum rhodium, and the space in the slots may be filled with an inert gas, e.g. helium.
Patent GB-183689-A (GB)
Title: Improvements relating to hunting arrangements in telephone systems
IPC: H01H67/16
Filed: 1921-07-06
Abstract: 183,689. Siemens Bros. & Co., Ltd., Petithory, E. A., and Collyer, J. E. July 6, 1921. Selectors.-A ratchet-driven switch for use in automatic or semi-automatic systems is constructed so that during hunting the wipers are advanced from one set of contacts to the next both upon energization and de-energization of a single magnet, or upon the energization or deenergization of two magnets operated alternately. The former arrangement is shown as applied to a Strowger selector wherein the ratchet 3 on the wiper shaft is rotated in turn by pawls 11, 13, both connected to the pivoted armature 7, which is returned by a spring 9. The energization of the release magnet 21 withdraws a detent 19 and moves the armature 7 to a mid-position in which the pawls 11, 13 are both clear of the ratchet 3.
Patent GB-183544-A (GB)
Abstract: 183,544. Case, E. R. April 20, 1921. Air, gas, and vapour injectors and douches.- Liquid or solid treating-agents for the air are vaporized in an electric heater of the reflector type in which the support c for the resistance wire H is fitted with a holder or container J for the treating agents, which are liberated within the reflector and are thus added to the circulating air-current produced by the heater. For liquid treating-agents for humidifying or deodorizing a valve 5 may be used, controlling a separate supply, Fig. 1, or a casing A<11> behind the reflector may enclose a saturated filling-material Fig. 2. For fumigating or disinfecting with solids such as sulphur, 9, the reflector has perforations M, Fig. 9, to produce auxiliary air currents from behind.
Patent GB-1188607-A (GB)
Title: A Portable Device for Passing Air through Test Tubes
IPC: G01N33/00
Filed: 1968-04-18
Abstract: 1,188,607. Gas analysis. AUERGESELLSCHAFT G.m.b.H. April 18, 1968 [April 18, 1967], No. 18471/68., Heading G1B. A portable device for passing air through test tubes e.g. in determining concentrations of carbon monoxide, comprises a casing 1 containing a pump driven by an electric motor (not shown) and connected by bore connections to fittings 2, 3 serving to hold test tubes, one fitting being connected to the pump inlet and the other to the pump outlet, the fittings being located on a wall 5 of the casing. Knobs 6, 7 are provided to control the motor and a window 8 allows a check to be made on the working order of the device. The casing 1 is fitted with a lid 11 and also provides a chamber 10 for storage of test tubes. Reference has been directed by the Comptroller to Specification 1,107,109.
Patent GB-185900-A (GB)
Title: Improvements in the feed mechanism of automatic guns
IPC: F41A9/77
Filed: 1921-07-07
Abstract: 185,900. Vollmer, H. July 7, 1921. Machine guns.-Relates to feed mechanism for guns of the type in which the cartridges or projectiles p are conveyed to the breech by a wire or like worm d arranged on a rotary shaft c at the outlet of a magazine h. According to the invention, the magazine is a substantially semicylindrical chamber having a slot through which the feed-worm protrudes and containing a hinged vane k acted upon by a spring q which sweeps the cartridges or projectiles on to the feed-worm. The curved wall of the magazine has an aperture o closed by a sliding shutter i.
Patent GB-454787-A (GB)
Title: Improvements in and relating to wringers
IPC: D06F45/00
Filed: 1936-07-03
Abstract: 454,787. Wringers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. July 3, 1936, No. 18562. Convention date, July 5, 1935. [Class 138 (ii)] The drainboards 9, which are pivoted to the side stiles 2, 3 of the wringer frame and are held in the raised position by the engagement beneath lugs 27 secured to the pressure and drive control bar 8 of the free edges of plates 20 pivoted to the boards, are held in the lowered position, against the action of spring- pressed pins which engage their lower edges, by struts 14 pivoted to the boards and engaging depressions 17 in the .wringer frame.
Patent GB-230347-A (GB)
Title: Improvements in and relating to bucket-boxes for tank trucks
IPC: B60P3/22
Filed: 1924-08-05
Abstract: 230,347. Percival, S., (Davis Welding c Manufacturing Co.). Aug. 5, 1924. Tank carts.-Relates to the construction of method of securing a bucket box to the tank o a tank vehicle. The bucket box is formed o sheet metal in sections, of which one section com prises the back, sides, and top. The back plate 7, Fig. 6, has a cut-away portion 25 and is pro vided with rearward tongues 26 which are adapted to be welded to the extension 5, Fig. 3, of the tank 1. The 'side wings 9, 10, Fig. 6, are ben to form the sides and top and are welded in posi tion. Portions 12 are so bent as to form side frames for the rear doors 23, Fig. 1. The rea arch is preferably formed of three pieces 21, 22 suitably welded together and to the top plate 10 door frames being bent from their edges. Th bottom plate 20 is secured to the flanges 19, and a lining 24 of wood is provided. The bucket box is preferably of larger cross-sectional area than the tank. If desired, the top portion of the back plate may be separate and secured to the bottom plate of the back and to the tank by welding-
Patent GB-703665-A (GB)
Title: Apparatus for closing the bottom end and/or the top end of a foldable box
Inventor: VOSLAMBER BEREND JOHANNES
IPC: B31B5/74
Filed: 1951-08-08
Abstract: 703,665. Making and closing cartons. ROELFSEMA'S OLIEFABRIEKEN, N.V. Aug. 8, 1951, No. 18681/51' Classes 18 and 94 (1) Apparatus for folding down the end closing flaps of a four-sided box comprising a folding device pivoted on an axis parallel to the fold line of the respective flap, on each side of the box, has faces on one pair of opposite devices which engage and pull the respective flaps towards each other, as well as folding them down. In an apparatus for closing the bottom flaps of a carton, folding arms 4, 7 are pivoted on shafts 5, 8 attached to a frame 1. The arms 4, 7 are biased outwardly by springs 10, 14 respectively acting on levers 13, 15 rigid with the arms 4, 7. The box A is placed over the frame and a pedal 16 depressed, causing folders 6 on the arms 4 to fold in the respective pair of flaps. A pedal 17 is depressed to move the arms 7 inwardly when rubber blocks 9 engage the remaining pair of flaps to fold them inwardly and pull them towards each other. Spring- loaded pressers 25, pivoting with the arms 7, engage the box walls to ensure a neat fold. A heater 3 assists securing of the flaps by adhesive. In an alternative arrangement (not shown) for closing the ends of filled boxes, the box is placed on a platform having arms similar to 4, 7 pivoted at the sides, and the flaps are folded in on the contents. Heaters may be fitted in the blocks 9. In a further arrangement in which narrow end flaps are folded on to and secured to a separate end closing sheet, the arms 4, 7 may be operated simultaneously by a single pedal and blocks 9 may be carried additionally by the arms 4.
Patent GB-372144-A (GB)
Title: Means for resiliently mounting motor vehicle mudguards
IPC: B62J15/02
Filed: 1931-06-29
Abstract: 372,144. Mudguards. GREEN, T. L., 46, Bromsgrove Street, and OSBORNE, W. H., 119, Leopold Street, both in Birming- ham. June 29, 1931, No. 18699. [Class 136 (i).] Mudguards for motor vehicle steering road wheels, of the type adapted to turn with the wheels during steering movements, are resiliently supported by one or, more springs or other resilient devices carried by an attachment part connected to the brake drum anchor plate or other part which turns with the steering wheel. The mudguard 1 is strengthened by stays 6, 7, 8, which extend down one side and are rigidly connected to a vertical bar 9, which is connected by two pairs of parallel-motion links 22, 23 to a vertical bar 17 rigidly secured to an attachment plate 3 bolted to the inner anchor-plate 2 of the brake drum, the motion of the links being controlled by one or more springs 24. The pivot bolts 15, 16, 20, 21 of the links pass through sleeves on the upper and lower ends of the bars 9, 17.
Patent GB-146847-A (GB)
Title: Improvements in apparatus for pointing guns and projectors or the like
IPC: F41G5/16
Filed: 1920-07-05
Abstract: 146,847. Anciens Etablissements Sautter HarlÚ. Oct. 28, 1913, [Convention date]. Void [Published under Sect. 91 of the Act]. Self-levelling apparatus.-Relates to apparatus for controlling the movements in altitude and azimuth of naval guns, light-projectors, &c. from a distant telescope, and consists in connecting the telescope to a gyroscope, or to a member rendered gyroscopic, the mechanism for moving the telescope in altitude and azimuth being carried by the gyroscopic member, and the whole being supported by a universal joint or other equivalent means. Fig. 2 shows a known apparatus for the distant control of a light-projector from a telescope a. The movements in altitude of the telescope disturb the balance of a Wheatstone bridge comprising resistance e, e<1>, connected in parallel to continuous current mains, and bridged by a wire p through a galvanometer g, the deflexion of which, through a relay r, starts a motor s which elevates the projector until the bridge balance is restored. A similar device controls the projector in azimuth. To stabilize the telescope a on a rolling ship, it is connected through an elevating-gear o, Fig. 3, and training-gear m to a gyroscopic box f universally supported at b<1> either from the ship as shown, or from a bracket carried by the telescope. In a modification, the telescope may be connected to a universally-mounted intermediate member rendered gyroscopic by a control device similar to that shown in Fig. 2 actuated by a distant gyroscope. Separate stabilized telescopes may be employed one for the control in altitude and the other for that in azimuth.
Patent GB-1465043-A (GB)
Title: Buoys
IPC: B63B22/00
Filed: 1974-06-25
Abstract: 1465043 Buoys TRINITY HOUSE LONDON CORP OF 25 June 1974 [18 April 1973] 18762/73 Heading B7A  Navigational buoy has a body with an outer wall 10 of glass-reinforced plastics, a ring of buoyancy material 29, 30 within the body, and a buoyancy air space 32 within the ring. The buoy is made in upper and lower parts which are bonded together, the joint being covered by a neoprene fender 28. The buoyancy rings 29, 30 are polyurethane moulded in situ, with glassfibre sheets covering all faces of the ring. A battery compartment 12 is bonded to the lower half of the buoy by glass-fibre sheets stiffened by paper-rope or polyurethane ribs under the sheets. The buoy has a keel 23, and two tie rods pass through vertical tubes within the buoy and carry mooring rings and lifting eyes.
Patent GB-530593-A (GB)
Title: Improvements relating to drilling machines
IPC: B23B51/00
Filed: 1939-06-28
Abstract: 530,593. Drilling ; drills. ROE & CO., Ltd., A. V., and TAYLOR, R. F. June 28, 1939, No. 18792. [Class 83 (iii)] Twist drills, particularly those in portable power-spindled drills are supported against deflection and breakage by a telescopic sleeve c, d, the sleeve c being a sliding fit for the drill as also a collar f. A resilient washer or spring ring h prevents the device from sliding off the drill and ensures rotation with it. A compression spring between the two sleeves reduces shock when the drill breaks through. The end of the sleeve may be coned at i to engage a corresponding surface on a jig j.
Patent GB-875312-A (GB)
Title: Automatic speed control systems for a.c. commutator motors
IPC: H02K27/04
Filed: 1959-06-02
Abstract: 875,312. Automatic speed-control systems. ZAVODY V. I. LENINA PLZEN NARODNI PODNIK. June 2, 1959 [June 2, 1958], No. 18801/59. Class 38 (4). A polarized relay responds when a voltage derived from a tachometer generator driven by an A.C. commutator motor 4 differs from a reference voltage, whereupon a reversible servomotor 1 displaces the brush-gear to maintain the speed of the motor 4 at a desired value. The error voltage applied to the coil of the polarized relay is also applied through a circuit 2 to an electromagnet 3 which is adapted to change the gear-ratio of the drive between the servomotor and the brush-gear. Thus, the brushgear is driven at a high speed when the error voltage, or its rate of change is large, smaller deviations being corrected at a lower rate.