baber/WOPTO huggingface dataset:
Patent GB-440528-A (GB)
Title: Improvements in and relating to electrical indicating instruments particularly adapted for use as radio tuning indicators
IPC: H03J1/04
Filed: 1935-02-11
Abstract: 440,528. Current meters. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Feb. 11, 1935, No. 4360. Convention date, Feb. 10, 1934. [Class 37] An electrical indicating instrument, particularly adapted for use as a timing indicator for radio apparatus, comprises a source of light 20, a current responsive movement such as a magnetic vane 13, a shutter 22 carried by the movement and having a plurality of recurrent formations such as teeth 23, and a translucent screen 18, the formations on the shutter being projected on the screen and passing across the face of the latter in response to deflection of the movement, but being substantially unchanged in appearance for different positions of rest of the movement. In the form shown, the general arrangement of the instrument is similar to that described in Specification 425,622, the movement comprising a magnetic vane armature 13 pivotally mounted within a coil 11 carrying a 0-shaped permanent magnet 16 at one end. When used as a tuning indicator, the coil 11 is connected in the output circuit of a detector tube, and the direct current passing through the coil deflects the vane 13 and causes a series of saw-tooth shadow forms 25 to move across the screen 18. As resonance is approached, the current through the coil diminishes, and the shadow forms move in the direction indicating lower current values, then, as the resonant point is passed, the direction of motion of the shadows is reversed. In a modification, Fig. 2, a second shutter 30 with a serrated edge 31 is mounted on the vane 13 on the side opposite the shutter 22. This arrangement produces two shadow forms 25, 32 which travel across the screen in opposite directions, so that the apparent rapidity of the motion is doubled. In another form, Fig. 4 (not shown), the shutter is provided with apertures instead of serrations, so that light spots, instead of shadow forms, are projected on to the screen.
Patent GB-1504671-A (GB)
Title: Device for regulating batching pumps
IPC: F04B49/12
Filed: 1976-02-04
Abstract: 1504671 Reciprocating pumps A ELLILA 4 Feb 1976 [27 Feb 1975] 04387/76 Heading F1A [Also in Division F2]  A device for adjusting the stroke of a camactuated diaphragm or piston pump comprises an abutment member 4 having maximum and minimum radii somewhat less than those of the cam 2 and rotatably mounted on the cam-shaft 1 adjacent the cam 2 so as to be engageable by the spring- loaded actuating rod 3 of the diaphragm or piston, the angular setting of member 4 limiting the return stroke of rod 3 by its loading spring. Member 4 may be an Archimedes spiral, as shown, or may comprise two arcuate portions joined together without a step. The angular setting of member 4 is determined by a stop pin 5 fixed thereto engaging an adjustable stop pin 7 for one direction of rotation of shaft 2 or another stop pin 8 for the opposite direction of rotation. Alternatively, member 4 may be adjusted by an electric motor or by a magnet. A plurality of cams and members 4 may be mounted on a common shaft for controlling a plurality of pumps.
Patent GB-1239766-A (GB)
Title: Battery charging systems
IPC: H01F10/06
Filed: 1968-01-29
Abstract: 1,239,766. Battery charging systems for vehicles. JOSEPH LUCAS (INDUSTRIES) Ltd. 21 Jan., 1969 [29 Jan., 1968], No. 4409/68: Heading H2H. [Also in Division G3] A vehicle battery 11 is charged by a singlephase permanent magnet alternator 12 through a rectifier comprising a pair of diodes and a pair of thyristors. A regulator 16 provides gate current to the thyristors provided that the batteryvoltage is below a predetermined value, and interrupts the rectified output from the alternator for periods which result in stabilized battery voltage. When an ignition switch 13 is closed, capacitor 21 is charged and transistor 19 conducts to ensure that transistor 26 remains off, whereby transistor 29 conducts to illuminate a warning lamp 31. When the alternator is delivering current, it produces substantial ripple voltage across lines 14, 15, to augment the voltage on capacitor 21. The transistor 19 is turned on at the peak of each ripple pulse, and is held off for the rest of the cycle whereby capacitor 24 is charged to enable base current to be supplied to transistor 26. During brief periods of conduction of transistor 19, capacitor 24 discharges to supply base current to the transistor 26. Thus, when there is ripple voltage between lines 14, 15, the transistor 26 conducts and the lamp 31 is off. If the ripple supply is interrupted by the regulator 16, the capacitor 21 discharges to hold the transistor 19 off so that the lamp remains off. If the ripple voltage is absent for a substantial length of time, however, the capacitor 21 discharges completely whereby transistor 19 conducts to illuminate the lamp. When the voltage across lines 14, 15 exceeds a predetermined value, zener diode 33 conducts to turn on the transistor 29 and illuminate the lamp.
Patent GB-536163-A (GB)
Title: Improvements in friction clutches
IPC: F16F15/123
Filed: 1940-03-09
Abstract: 536,163. Friction clutches. GENERAL MOTORS CORPORATION. March 9, 1940, No. 4433. Convention date, March 25, 1939. [Class 80 (ii)] A friction clutch plate 31 is provided with a number of spring plates 33, 35 to opposite sides of which are secured friction facings 57, 57<1>. The plates 33 alternate with the plates 35 and, as shown in Fig. 8, comprise a portion 37 for connection to the plate 31, a portion 45 co-planar with the portion 37 leading by an angular portion 47 to a portion 49 parallel to the portion 45. Parallel slots 51, 53 connected by a slot 55 are formed in the portions 47, 49 The plates 35 have attaching portions 63 and portions 65, 71 in the same plates respectively as the portions 45, 49 of the plates 33, the portions 65, 71 being connected by angular slotted portions 69. The facing 57 is connected by rivets 59, 73 to the portions 49, 71 and the facing 57' by rivets 62, 67 to the portions 45, 65.
Patent GB-833267-A (GB)
Title: Improvements in or relating to magnetic test particles
Inventor: KAZENAS ZENON
IPC: G01N27/84
Filed: 1957-02-08
Abstract: 833,267. Magnetic particles. STEELE, J. D. Dec. 31, 1957 [Feb. 8, 1957], No. 4475/57. Class 38 (2). Magnetic particles for tracing flaws in a magnetic body are made by a process which includes the steps of forming a partially cured resin containing magnetic material and tracer material, pulverizing the mixture and completing the cure of the resin. The magnetic material may be carbonyl iron of 5 micron particle size, red iron oxide of less than six micron particle size or a ferromagnetic alloy powder; the resin may be transparent and may be one of a number of specified epoxy resins or an amidealdehyde resin such as a melamine-formaldehyde or urea-formaldehyde resin modified or unmodified or blended with each other or an epoxy resin; the tracer material may be a fluorescent substance such as 2-hydroxy-1-naphthaldazine, or a fluorescent metallic salt of 8-hydroxyquinoline (e.g. of zinc), or a non-fluorescent pigment such as titanium dioxide, vermilion, molybdate orange, " Hansa " yellow (Registered Trade Mark), Milori green, copper phthalocyanine blue or carbon black. Rhodamine may be used for both fluorescent and non-fluorescent testing. A diffuse-reflecting opacifying agent such as titanium dioxide may be incorporated. In one process carbonyl iron was mixed to a thick paste in a solution of a catalyst, metaphenylene diamine, in an epoxy resin and allowed to stand at 85‹ C. until the resin had set to a friable solid. It was then pulverized at room temperature to spheroidal particles of iron coated with resin, milled with the fluorescent pigment for 24 hours and cured for ¢-hour at 150‹ C. The product, a rather brittle slightly porous mass, was milled to a powder of 6-7 microns particle size, resinous dust and free pigment being separated by washing. A somewhat inferior product resulted when the magnetic and tracer powders were added together, either in the liquid resin, or after the solidified resin had been milled. The use is described of such materials that cooling with dry ice is needed before pulverization, and the final material is milled while cooled by liquid nitrogen.
Patent GB-682701-A (GB)
Title: Improvements relating to change-speed power transmissions for motor vehicles
Inventor: ISSIGONIS ALEXANDER ARNOLD
IPC: F16H61/02
Filed: 1950-02-22
Abstract: 682,701. Change-speed gear. MORRIS MOTORS, Ltd. April 4, 1951 [Feb. 22, 1950], No.4516/50. Class 80 (ii). The countershaft 15 of a vehicle change - speed gear, which is driven normally through ar electromagnetic friction clutch 1 and shaft 9 to provide three for ward ratios and reverse, is under driven through a normally en gaged friction clutch 2 and addi tional wheel-pair 13, 14, includ ing a free-wheel 16 which over runs whilst both clutches are en gaged together for high gear Automatic shift between the high and underdrive ratios is provided by control of the winding 5 of the electromagnetic clutch by input and output driven governor-switches in parallel circuits, Fig. 2, the input governor-switch 18 safeguarding the engine by ensuring that the electromagnetic clutch is always engaged above a predetermined engine-speed (corresponding to 40 m.p.h. in high). In both circuits is a switch 25 opened by selecting first speed and reverse to ensure that the high speed countershaft drive is not effective in those ratios. The output-driven governor-switch 19 closes its circuit to introduce the high speed at 20 m.p.h., this circuit being broken to restore underdrive by accelerator kickdown, to open a normally-closed switch 27. In series with this circuit-branch is a switch 29 closed by a bi-metal thermal element actuated by a heater coil 30 in series with only the kickdown switch 27 so as normally to maintain the thermal switch 29 closed except at kickdown. The re-closing of the thermal switch 29 after subsequent accelerator-release for upshift, provides a delay of one second to allow time for the engine-speed to fall to that of the new ratio. The mechanical clutch 2 is controlled by a normal clutch pedal for breaking the drive. A further normally-closed switch 21 in the main circuit of the clutch-winding 5 is opened by depression of the pedal controlling the clutch 2, and a push-button 42 provides direct energisation of the winding 5 for a towed engine-start. A resistor 24 and capacitor 23 reduce arcing at the switch contacts, and a dropping resistor 22 is included in the main circuit, which is energised by the vehicle battery only. Both governor-switches 18, 19 have an operating differential of 3 m.p.h.
Patent GB-1528691-A (GB)
Title: Survey systems
IPC: G01S5/16
Filed: 1977-05-06
Abstract: 1528691 Mining equipment COAL INDUSTRY (PATENTS) Ltd 6 May 1977 [6 Feb 1976] 04731/76 Heading E1F [Also in Division H4] The shape of the path 1 followed by a coal cutting machine 11 as it traverses a coal face is measured by an opto-electronic system, which, using computing techniques makes a continuous series of measurements of the angular positions of optical sources 12, 13; as described, reflectors; positioned, on the heading axis of the optical receiver, and on the pit props erected along the traverse path, whereby the straightness of the cut along the coal seam may be continuously monitored. The optical receiver 10 is a linear (but may be 2-D<SP>1</SP>) array of photodiodes 23, Figure 5 directly connected to a readout shift register 26. The transmitter (not shown) may be either a wide beam L.E.D. source or a scanning laser positioned close to the receiver optics 22, 24. The processing circuitry is a microprocessor which uses the angular and distance measurement to compute the profile of the cut, which may be displayed in analog and digital form, in situ.
Patent GB-586792-A (GB)
Title: An electrically heated dental spatula
IPC: A61C13/00
Filed: 1945-01-16
Abstract: 586,792. Electric heating. FOWLER, L. C. CROYDON-. Jan. 16, 1945, No. 4779/44. Drawings to Specification. [Class 39 (iii)] A dental spatula is heated by an electric resistance wire on a heat-conducting electrically insulating tube surrounding the handle portion. The resistance is covered with a layer of insulating material, the whole being contained in an outer cover with the spatula head protruding.
Patent GB-212246-A (GB)
Title: An improved carburettor for internal-combustion engines
IPC: F02M19/03
Filed: 1924-02-25
Abstract: 212,246. Ducamp, A. J. Feb. 27, 1923, [Convention date]. Addition to 210,995. Spray carburettors.-The parent Specification describes a nozzle c of comparatively large bore opening freely into the choke tube d and having a calibrated constriction k below the fuel level, a tube of larger diameter than the nozzle and arranged coaxially therewith said tube being open to the atmosphere at its upper end and closed at its lower end with the exception of a calibrated passage h with constriction l, and passages g leading from the annular space f to the bore c. The invention consists in forming, in the head of the casing s, passages t through which air flows to impinge upon and further atomize the emulsion issuing from the nozzle, and also to prevent such emulsion from adhering to the upper surface of the casing.
Patent GB-822584-A (GB)
Title: Improvements in and relating to feed plates for typewriters or the like
IPC: B41J13/10
Filed: 1957-02-12
Abstract: 822,584. Typewriters. HEDENSTROM, E. A. G. Feb. 12, 1957 [Feb. 15, 1956], No. 4800/57. Class 100(4)  Papers 3 are smoothed out as they are fed to the rear of a platen 8 by a bar or roller 7 attached to a chain 6 or a flexible strip attached to a transverse bar 5 supported between side flanges 4 of a guide plate 1 over which the papers 3 are fed.
Patent GB-140382-A (GB)
Title: Improvements in sparking plugs for explosion engines
IPC: H01T13/24
Filed: 1920-02-17
Abstract: 140,382. Lemoine, G. E. March 19, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Sparking-plugs.-At starting, or for cleaning the terminals, the fluted central electrode b may be moved axially against the action of the spring i for admitting petrol, which is placed in the cup h in the outer end of the insulator f.
Patent GB-750005-A (GB)
Title: Improvements relating to radar automatic tracking circuits
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: G01S13/72
Filed: 1953-02-21
Abstract: 750,005. Thermionic distributers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 22, 1954 [Feb. 21, 1953], No. 4886/53. Class 40 (3). [Also in Group XL (c)] In a pulse radar (see Group XL (c)) a plurality of signals from stores I, II ... are applied respectively to the control grids of triodes 71a, 71b ... which have a common cathode load 81, the grids being also coupled via diodes 73a, 73b ... to the anodes of the series-connected triodes 74a, 74b .... Valves 74 and hence diodes 73 are normally conductive so that the input signals to triodes 71 are attenuated as descirbed in Specification 738,827, [Group XL (c)], but when a negative trigger pulse is applied to valve 74a, valves 74, and hence diodes 73, are switched off in succession as described in Specification 647,950 so that the input signals are applied successively to load 81.
Patent GB-425645-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C13/00
Filed: 1934-02-14
Abstract: 425,645. Aircraft. FAIREY AVIATION CO., Ltd., Cranford Lane, Hayes, Middlesex, and LOBELLE, M. J. O., Ludlow, Langley Road, Langley, Buckinghamshire. Feb. 14, 1934, No. 4928. [Class 4] In an aircraft fuselage provided with fins running longitudinally in substantially the direction of the airflow along the aft end thereof in proximity tc the tail unit, the fins being arranged symmetrically in pairs and converging the angle of convergence of the fins may be varied by turning the fins about longitudinal axes. The fins may be of rectangular or semicircular shape and of thin and symmetrical crosssection, or they may have an asymmetrical aerofoil or other aerodynamic section. The angle of convergence of the fins 17 is adjusted through shafts 21, levers 20, 18 and a link 19.
Patent GB-661217-A (GB)
Title: Improvements in or relating to sea anchors
IPC: B63B21/48
Filed: 1949-02-23
Abstract: 661,217. Drag anchors. FRIEDER, L. P. Feb. 23, 1949 [Feb. 25, 1948], No. 4937/49. Class 114. [Also in Group XXV] In a, sea anchor 10 attached to a vessel 25 by two painters 23, 24, each taking a suhstantial part of the load, the anchor is connected to one painter 23 by a group of shroud lines 13 and to the other, 24, by a smaller group 14, and the painters are provided with lines, or with loops 28, 29, for attachment to cleats, or to a post 27, and with a connecting loop 26. When the one painter 23 is released from the vessel, the anchor collapses ; by paying out either of the painters a partial spill of the anchor is obtained to produce a steering effect. The anchor may carry a weight 15, and the painters may include spaced buoyant elements 30. Buoyant discs 31, 32, keep the shrouds in proper relation and are themselves attached to the painters by lanyards. When in normal use the discs and painters are connected by light lines 38, 39, which break immediately a painter is moved to change the condition of the anchor. The painters with their lines and loops may be formed from a tubular braided line of nylon, and a preferred method of splicing is described (see Group XXV). Specification 628,822 is referred to.
Patent GB-381069-A (GB)
Title: Improvements in and relating to spectacle bridges
IPC: G02C5/06
Filed: 1932-02-19
Abstract: 381,069. Spectacles. KAPERNICK, G. F., 47, Kaiserstrasse, Frankforton- Main, Germany. Feb. 19, 1932, No. 5011. Convention date, Aug. 17, 1931. [Class 97 (i).] In a spectacle bridge the ends of the bridge are reduced in thickness from about the point where it no longer rests on the nose, the reduced portions being coiled or folded back on themselves to provide a flexible connection with the eye rims or the like. As shown in Fig. 1, the ends of the centrally flattened metal bridge 1 are tapered into thin wire coils 4. The ends may be soldered to the eye-rims 3, or the wire may after soldering to the eye rims be extended to carry placquets, 7 as shown in Fig. 6. Modifications in which the wire is folded are shown in Figs. 4 and 5.
Patent GB-765322-A (GB)
Title: Method and means for inhibiting corrosion of metal closures
Inventor: HUSUM CHARLES WILLIAM
IPC: B65D41/02
Filed: 1955-02-21
Abstract: 765,322. Closure cap gaskets. OWENSILLINOIS GLASS CO. Feb. 21, 1955, No. 5077/55. Drawings to Specification. Class 125(3). A rubber gasket for a metal closure cap is coated with an electrically insulating material such as a mixture of oil and wax chosen from such substances as paraffin wax, microcrystalline wax, mineral oil, soya bean oil, cotton seed oil or beeswax, carnauba wax, spermaceti, palm wax, ozokerite, montan wax, ceresin wax, lignite wax, cocoanut oil, linseed oil, castor oil, olive oil and palm oil. After dipping or spraying with the composition the gaskets are heated, while being continuously agitated, until the composition has permeated the gasket and excess is evaporated. Satisfactory proportions are for example 20 per cent paraffin wax, 80 per cent mineral oil. The gasket is said to inhibit corrosion of the metal cap by preventing electrolytic action.
Patent GB-546728-A (GB)
Title: Improvements in means, especially in measuring and other instruments, for amplifying movement of relatively movable parts
IPC: G01B3/10
Filed: 1941-04-22
Abstract: 546,728. Indicating or recording instruments. WOOLNOUGH, G. L., WILCOX, K., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. April 22, 1941, No. 5175. [Class 106 (iv)] [Also in Group XX] Comprises a particular construction of amplifying movement of the kind employing differential rollers around which are wrapped flexible bands. The invention is described as applied to a temperature recorder. Two bimetallic strips 1, 2 are secured at one end in spaced relationship to opposite faces of a spacing block 3 by screw clamps so as to be square to the block. The strips are arranged to deform in opposite directions with change of temperature. A roller 10 is provided at the ends with rollers 11, 12 of somewhat greater diameter secured to the roller 10. To these are secured flexible phosphor bronze tape strips or ligaments 13, 14 which after being partially wrapped around the rollers have their free ends clamped between a cross strip 17 welded to the upper end of strips 1 and a clamping strip 18. Two similar strips 23, 24 after wrapping around roller 10 in the opposite direction to strips 13, 14 are secured by cross pieces to the bimetallic strip 2. An additional strip 33 secured to the roller 10 after being partially wrapped around the roller oppositely to strips 23, 24 is secured to an adjustable spring 36. The end of roller 10 carries a recording arm 39.
Patent GB-180029-A (GB)
Title: Improvements in friction clutches
IPC: F16D19/00
Filed: 1921-02-15
Abstract: 180,029. Pugh, G. E. Feb. 15, 1921. No Patent granted (Sealing fee not paid). Clutches, friction: variable-speed gearing.-In friction clutches for motor vehicles &c., the driving and driven members are each provided with a clutch element capable of a tilting movement relative to its respective member and so arranged that the clutching effect is determined by the degree of inclination given to the elements. A peripherally grooved disc b is mounted by pivots a<1> on a driven shaft a and carries loosely in its groove b<1> two rings d. d<1>, provided with perpendicularly-disposed pairs of pivots d<2>. The pivots are provided with bearing-sleeves g, externally rectangular to engage outer sleeves (not shown), which are shaped to fit mutually-perpendicular guides f in a spherical shell e secured to the driving-shaft. The shell e and enlarged end a<2> of the shaft a are cut away as shown at e<1>, a<3> respectively, to allow full movement of the disc and rings. When the disc b is perpendicular to the axis of the shafts, the rings d, d<1> revolve idly thereon, but when it is tilted, as shown, by a link c<1> and manually-operable collar c, the driving- effort presses the ring against the walls of the groove b<1> with a force depending on the degree of inclination and ultimaely causes rotation of the driven shaft a. To avoid jar, the disc or rings may contact with spring buffers in the extreme positions. In modifications, the driving and driven shafts may be interchanged, and the angular movement may be imparted to the rings. According to the Provisional Specification, a single driving-ring is connected to a frame or spider at several points by links or elements constituting universal joints.