baber/WOPTO huggingface dataset:
Patent GB-1381291-A (GB)
Title: Measurement of pitch errors in screws
IPC: G01B13/12
Filed: 1971-01-08
Abstract: 1381291 Apparatus for measuring the pitch error in screws TRADE INDUSTRY SECRETARY OF STATE FOR 24 Jan 1972 [8 Jan 1971] 1126/71 Heading G1A In an apparatus for measuring the pitch error in screws two diffraction gratings are employed, a circular diffraction grating which may be rotated with the screw and a linear diffraction grating which may be held parallel to the screws axis. Each diffraction grating has a receiving head comprising a photo-cell and a further diffraction grating associated with it so that when the screw is rotated both reading heads move relative to their grating each producing cyclic output signals due to moire fringes. The gratings are designed and arranged so that if the screw is perfect the two output signals will be identical in frequency and phase so that any pitch error will produce a phase difference between the two signals which is measured by a phasemeter. In Fig.1, the screw 10 and its circular diffraction grating 22 are rotated by a motor 28 and its associated gears 20, 26 while a reading device 24a, 24c, b, d (not shown) comprising four equally spaced heads is held opposite the grating. A carriage 32 is moved to be substantially in step with the screw's helix by means of a further screw rod 58 driven by the motor 28 via gears 54, 56. The carriage 32 carries a mounting plate 31 attached to it by resilient ligaments 32 and 33, with a further reading head 34 adjacent a stationary linear diffraction grating 38, the plate 31 carries a flexible stylus 36 which engages the screw threads as shown and keeps the plate 31 precisely in step with the screw helix. The outputs of the two reading devices 24, 34 are fed to a phasemeter 42 which produces an output proportional to the phase difference and thus the pitch error of the screw. In a further similar arrangement Fig.2 (not shown) the reading head is attached directly to the carriage and a position responsive transducer is attached to the stylus. The outputs of the two reading devices are subtracted to give a signal representing the transmission error of the apparatus and this is subtracted from the position responsive signal to give as before a signal representing pitch error. Two further modifications are employed, Figs.3 and 4, Fig.4 (not shown), wherein the stylus is replaced by a non-contact making pneumatic probe 64 which is positioned to produce two jets of air 70, 72 at opposite flanks of the screw thread 84, 86 and a pressure sensitive transducer 82 may be employed to provide positions sensitive signals as before and, (Fig.4), to keep the probe in the centre of the thread.
Patent GB-1492673-A (GB)
Title: Apparatus for measuring the speed of a rail-mounted wheeled vehicle
IPC: G01P3/64
Filed: 1975-01-10
Abstract: 1492673 Acoustic measurement of velocity SIEMENS AG 10 Jan 1975 [21 Jan 1974] 1201/75 Heading G1G In a device for measuring the speed of a railmounted wheeled vehicle, a pressure wave generator and two receivers, all on the vehicle, are coupled to one rail, the receivers being on opposite sides of the generator, and the times taken for a pressure wave to travel from the generator through the rail to the receivers are utilized in an evaluator to give the vehicle speed. An ultrasonic generator US is coupled to the rail SE by the vehicle wheel R and pulses picked up by receivers El, E2 which may be coupled to the rail by wheel axles, are amplified by amplifiers VR1, VR2 prior to an evaluation process in unit AG2 to give the speed as a reading on an instrument V or additionally as a signal to a distance measuring instrument S. The distance measured by S may be compared with that measured by a driven wheel of the vehicle to produce brake and drive signals to control wheel spin or skid. A further embodiment (not shown) uses four receivers and two transmitters to avoid possible spurious results due to rail joints.
Patent GB-396621-A (GB)
Title: Improvements in and relating to drying apparatus more particularly for plates of fibrous material
IPC: F26B25/20
Filed: 1933-01-13
Abstract: 396,621. Drying-apparatus. SIEMPELKAMP, E. and SIEMPELKAMP, E., (trading as SIEMPELKAMP & CO., G.), 204, Ritterstrasse, Krefeld, Germany. Jan. 13, 1933, No. 1210. Convention date, Jan. 16, 1932. [Class 34 (ii).] Articles in plate form, e.g. plates of fibrous material, are. conveyed through a drier by a sequence of pairs of superimposed rollers, the upper rollers, which can move freely towards and away from the lower rollers and are lifted by a plate in its passage between the upper and the lower rollers, being, in the absence of a plate, held at a predetermined spacing less than, and preferably only slightly less than, the thickness of the plates. In one form, the upper rollers a are mounted in bearing blocks b which can move vertically in slots c in the frame d. In their lowest position the rollers a are separated from the lower rollers e, and in the passage of a plate are lifted slightly. In other forms the desired minimum separation is obtained by employing discs of larger diameter than the rollers and coaxial therewith.
Patent GB-394604-A (GB)
Title: Improvements in or relating to chairs for the use of invalids
IPC: A61G5/10
Filed: 1933-01-16
Abstract: 394,604. Hand-rests for chairs. FOX, R. F. and FOX, T. M., (trading as FOX & CO., C. & T.), 7, Eldon Street, London. Jan. 16, 1933, No. 1468. [Class 52 (ii).] A chair for invalids is provided on the arms with hand-rails 3 and progressively higher hand-rests 6, 5 to assist the invalid to rise out of the chair. An upholstered hinged arm rest 7 covers the handrail 3 when the chair is in normal use ; in a modification the hand rails themselves comprise the arm rests. A movable pad 8 may be fitted on the forward face of the back of the chair.
Patent GB-1188781-A (GB)
Title: Method of Moving Viscous Crude Oil through a Pipeline
Inventor: KANE ARTHUR V
IPC: B67D7/32
Filed: 1968-01-10
Abstract: 1,188,781. Boundary layer control. CHEVRON RESEARCH CO. 10 Jan., 1968 [11 Jan., 1967], No. 1511/68. Heading F2R. A method of transporting crude oil through a pipe-line by injecting a mixture of crude oil and an aqueous solution of non-ionic surfactant into the pipe-line to contact the crude oil and to effect a flowing pressure drop decrease in the pipe-line and thereafter reducing the flow of surfactant solution being injected into the pipeline to less than 5% of the crude oil concurrently injected into the pipe-line to maintain the flowing pressure drop decrease. The injected aqueous solution forms with the oil an oil-in-water emulsion at the initial stage, thereafter the flow being reduced may be to 2% of the flow of oil, or even nothing. The surfactants may have ether or esther linkages and may be dissolved in distilled, tap or seawater. A separation tank may be provided at the outlet of the pipe to separate the oil from the solution.
Patent GB-810587-A (GB)
Title: Improvements in methods and apparatus for the extrusion of plastic compounds
IPC: B29C48/05
Filed: 1956-01-17
Abstract: 810,587. Extruding thermoplastic material. WESTERN ELECTRIC CO. Inc. Jan. 17. 1956 [Nov. 2, 1955], No. 1568/56. Class 87(2). In the extrusion of thermoplastic material the material is advanced along a working zone in at least a portion of which it is simultaneously worked with sufficient intensity to bring it into a condition for smooth and uniform extrusion, and is then discharged through an extrusion orifice. All the heat required to condition the thermoplastic compound is derived from the mechanical energy expended by the working and advancing means, and there is no supplemental heating or cooling. The invention is described in connection with a crosshead extruder for coating wires, material being fed from a hopper into an extrusion cylinder 20 through which it is pushed by a single flight screw 30 to emerge at a die 53 where it coats an advancing wire 15. The screw is in three portions. In the first portion A-B the helical screw channel 75 is deep and of uniform depth, the material being merely conveyed along and compacted. In the second portion B-C the depth of the channel 75 is a hyperbolic function of the length along the longitudinal axis of the screw decreasing hyperbolically from point B to point C, whereby a substantially constant acceleration is imparted to the material (see Specification 810,586) ; in this portion work is done on the material to heat it to a temperature below the desired final extrusion temperature, e.g. to 325F. at the point C for polythene, or 345F. for polyvinyl chloride. In the third portion C-D the material travels along a parallel-walled passage 81 formed between the cylinder wall and an extension 80 of the screw. The surface of this extension 80 may be threaded or, as shown, plain, and the extension may be integral with the screw 30 or, as shown, threadedly attached thereto. In the portion C-D the temperature so raised still further, e.g. to 350F. at the point D for polythene, or 390F. for polyvinvyl chloride (using a modified extension 80 having a forwardly converging passage 81-Fig. 5, (not shown). The hot material passes through a filter 36 and out through the die.
Patent GB-404144-A (GB)
Title: Method of preparation of bread
IPC: A21D2/36
Filed: 1933-01-18
Abstract: A mixture of fruit juices, e.g. lemon or orange juices, and carbonates or bicarbonates, e.g. calcium or sodium bicarbonate, is used as the raising means in the manufacture of bread and other bakery products.  A method of making bread is described in which corn is washed and roughly ground and the coarse meal steeped in water for 1-2 hours whereby diastatic fermentation takes place; the mass is then worked into a dough with the addition of the fruit juice and carbonate or bicarbonate and also a little olive oil and salt and baked in closed cylindrical tins for more than two hours.
Patent GB-679741-A (GB)
Title: Improvements relating to apparatus for making blood counts
Inventor: KNOWLES ALFRED JOHN
IPC: G06M1/10
Filed: 1950-01-20
Abstract: 679,741. Blood-counting apparatus. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Dec. 27, 1950 [Jan. 20, 1950], No. 1621/50. Class 81 (ii). In blood cell counting apparatus of the type in which a diluted sample of blood is moved relatively to a scanning head comprising a photo-electric cell, an enlarged image of the scanned field is projected on to the photoelectric cell and means is provided for making the height of the image substantially equal to the diameter of a blood cell. In the arrangement described a blood sample is passed through a tube 1 and light from a lamp 3 is directed on to a small section of it. An image of this is projected by a lens system 4 on to a screen 5 having an aperture 7 and the effective width of this aperture is reduced by adjustable screens 8, 9 until it approximates to the diameter of the image of a single cell. The light which is thus allowed to pass falls on the photo-electric cell 6. By employing this arrangement it is possible to count cells one at a time without having to reduce the diameter of the capillary tube 1 to a point at which frequent blockages would occur. Specifications 679,740 and 679,792 are referred to.
Patent GB-1248503-A (GB)
Title: Piston ring with surface coating
Inventor: BEYER HORST
IPC: F16J9/26
Filed: 1969-01-10
Abstract: 1,248,503. Piston rings. GOETZEWERKE FRIEDRICH GOETZE A.G. 10 Jan., 1969 [20 Jan., 1968], No. 1703/69. Heading F2T. [Also in Division C7] An iron or steel piston ring is coated with Cr, Cr carbide, Mo, W, WC, B carbide Re, Os or Ni e.g. by spraying or electrolytically and the coating alloyed with the ring by applying an electron beam, e.g. a laser beam. In specific examples (1) Cr is applied electrolytically, (2) Mo by spraying, and (3) as in (2) with an intermediate Cr layer.
Patent GB-130891-A (GB)
Title: Improvements in Motor Road Vehicles.
Inventor: TISSERANT AUGUSTE ALBERT HONOR
IPC: B62D61/08
Filed: 1919-01-23
Abstract: 130,891. Tisserant, A. A. H. Jan. 23, 1919. Driving steering-wheels.-The front driving and steering wheel, supported elastically from the front of the main frame, is driven through a bevel gear j<2> meshing with a bevel wheel j<3> splined to a vertical shaft k which drives the front wheel by bevel gears k<1>, k<2> carried in a casing m arranged between the members of the twin wheel.
Patent GB-342876-A (GB)
Title: Improvements in pit props
IPC: E21D15/52
Filed: 1930-01-18
Abstract: 342,876. Mine props. CONSETT IRON CO., Ltd. and SCHOLES, J., Lea Hurst, Aynsley Terrace, both in Consett, Durham. Jan. 18, 1930, No. 1827. [Class 20 (ii).] Mine props of the type comprising a main portion, a slidable sleeve with a wooden plug on the end of the main portion, and a metal wedge passing through apertures in the sleeve whereby it may be adjusted with respect to the main portion, are provided with continuous metal bearing plates 7 formed integrally with or secured to the sleeves 5 to rest upon the upper surface of the adjusting wedges 3 which are of hollow formation. The bearing plate may be welded to the sleeve or according to the Provisional Specification, parts of the sleeve may be slit and bent over to form an integral bearing plate.
Patent GB-1026117-A (GB)
Title: Improvements in and relating to electron guns
Inventor: SMITH NORMAN WILLIAM WHITE
IPC: H01J3/02
Filed: 1964-01-16
Abstract: 1,026,117. Electron guns. MULLARD Ltd. Feb. 23, 1965 [Jan. 16, 1964], No. 2006/64. Heading H1D. An electron gun for producing an annular electron beam, e.g. for use in travelling wave tubes, has a coaxial assembly which comprises a cathode having an annular electron-emission surface, a repeller electrode for repelling electrons emitted from the cathode, and a control electrode having a cylindrical inner surface which extends between the repeller and the cathode and is spaced radially from the cathode surface so as to permit electrons emitted from the cathode surface and repelled by the repellerelectrode to travel in a generally axial direction through an annular gap between the cathode and the control electrode. The repeller electrode either has a plane or convex surface facing the cathode.
Patent GB-122890-A (GB)
Title: Improvements relating to Atmospheric Burners.
Inventor: WEYMAN JAMES EDWARDS
IPC: G05D11/00
Filed: 1918-02-05
Abstract: 122,890. Weyman, J. E. Feb. 5, 1918. Fluid - actuated valves.-In connexion with an atmospheric gas burner, more particularly of the type employing blast-furnaces or producer gas, the internal and external air supplies are regulated by means of the gas pressure acting through a gas bell Q partially immersed in water in a vessel Y. In the event of the gas bell rising beyond a certain predetermined height, the gas valve is automatically partly closed. In one form, the rotary hit- and-miss air regulators are connected through linkage and a toothed quadrant S to a rack T on the guide-rod M attached to the top of the gas bell Q. The gas bell has a central tube R open at its lower end, the cross-sectional area of the tube being different from the cross-sectional area of the space surrounding the tube. Gas is admitted to the annular space through a pipe Z so that, on an increase of gas pressure, the gas bell rises and further opens the air inlets. When the air-inlets are fully open, a further upward movement of the gas bell partly closes the gas valve to reduce the gas pressure by means of a second rack W on the rod M engaging a second toothed quadrant connected bv linkage to the valve. In a modification, the tube R is closed at its lower end and filled with water through an air cock R<1> to the level of the water in the vessel Q.
Patent GB-234408-A (GB)
Title: Railway sleepers and chairs
IPC: E01B9/26
Filed: 1925-01-23
Abstract: 234,408. Harvey, A. T. Jan. 23, 1925. Chairs with fixed jaws; sleepers, integral with chairs, and securing rails to.-One or more chair jaws 13, 14 are secured by electric spot-welding to a sole plate or sleeper 12 and are provided with protuberances 15 or depressions engaging counterpart depressions or protuberances in the sole plate or sleeper.
Patent GB-1457212-A (GB)
Title: Apparatus for extracting smoke and heat
IPC: E05F1/00
Filed: 1975-01-17
Abstract: 1457212 Roof ventilator for heat and smoke J EBERSPACHER 17 Jan 1975 [18 Jan 1974] 2139/75 Heading A5A A venting apparatus for extracting heat and smoke from roofs comprises a frame for attachment to the roof around aperture 11 therein and having end walls 4, 5, side walls 12, 13, two cover members 1, 2, pivotally supported on swivel pins 3a and 3b on 4 and 5 so that the pivotal axis of each cover is laterally spaced from the vertical plane througth the centre of gravity of that cover so that the weight of end cover urges it .to move from its closed position to its open position, tension springs 7a, 7b attached to end walls 4, 5 and end parts 8, 9 of the covers and which are extended .on the covers moving to their open position and releasable locking means. 6 to keep the covers in their closed position, which on release allows the covers to open. The looking means 6 is actuated mechanically, pneumatically or automatically by a temperature responsive fusible element. The covers 1, 2 may form part of an electrical circuit to indicate when they are open. The tension springs 7a, 7b initially assist the opening of the covers but are then extended during the opening to control the rate of such opening.
Patent GB-851425-A (GB)
Title: Improved variable-ratio power transmission mechanism
IPC: F16H47/08
Filed: 1958-05-06
Abstract: 851,425. Change-speed control. GENERAL MOTORS CORPORATION. May 6, 1958 [May 6, 1957], No. 2225/60. Divided out of 851,424. Drawings to Specification. Class 80 (2). The subject-matter is the same as that of Specification 851,424 but the claims are directed to the control of the lock-up clutch 11 (see Specification 851,424) of the torqueconverter, by a lock-up shift-valve 266 subject to governor pressure to engage the lock-up clutch above a predetermined speed of the converter turbine, together with means responsive to a change in ratio in the mechanical gear to interrupt temporarily the supply of governor pressure to the lock-up shift-valve and thereby disengage the lock-up clutch temporarily during such change. Specifications 753,436, 796,948 and 851,426 also are referred to.
Patent GB-1156490-A (GB)
Title: Pyrone Flavouring Agents
Inventor: WINTER M
IPC: A23L27/20
Filed: 1966-05-02
Abstract: 1,156,490. Flavouring. R. FIRMENICH, G. FIRMENICH, R. E. FIRMENICH and F. H. FIRMENICH [trading as FIRMENICH & CIE]. 2 May, 1966 [30 April, 1965; 18 April, 1966], No. 2391/69. Divided out of 1,156,472. Heading A2B. Foodstuffs, especially instant coffee, are flavoured by the addition of a pyrone having the formula in which X and Y are oxygen or sulphur atoms.
Patent GB-265369-A (GB)
Title: Improvements in means for governing the speed of motor-driven vehicles
IPC: F02D9/00
Filed: 1926-01-28
Abstract: 265,369. Morris Commercial Cars, Ltd., and King, C. F. L. Jan. 28, 1926. Centrifugal governors; transmitting-mechanism. -The speed of motor vehicles is prevented from exceeding a predetermined limit by a governor driven from the road wheels, the driven shaft of the gear box or from any other part the speed of which bears a constant ratio to the vehicle speed, the governor being mounted upon the carburettor and actuating a valve which co-operates directly with the fuel nozzle or diffuser tube. The governor is enclosed by a casing 1 the lower portion 16 of which is fitted over a boss 17 on the carburettor body 18 above the choke tube 35. The governor shaft 7 is mounted in ball bearings 5, 6 and is squared at its ends 8, 9 to engage a socket 12 on a flexible driving shaft 10 and a socket 14 on another shaft 11 which may be arranged to drive a speedometer as described in Specification 265,271. The governor comprises an inclined disc 21 pinned to the shaft at 23 and connected through a link 25 to a sleeve 26 grooved at 43. The sleeve, which is normally pushed to the left by a spring 27, acts upon the fuel control valve 28 of the carburettor through a curved metal strip 40 pivoted at 42. The valve 28 is normally kept raised by a spring 37, and is depressed by the governor so as to close on its seat 30 and stop the fuel supply when the vehicle speed is excessive.
Patent GB-1387104-A (GB)
Title: Safety closures for containers
IPC: B65D41/04
Filed: 1973-01-17
Abstract: 1387104 Safety closures KERR GLASS MFG CORP 17 Jan 1973 [4 Feb 1972] 2474/73 Heading B8T A safety closure formed by inner and outer caps 14, 12 respectively has a ratchet teeth 19, 20 which enable the closure to be applied to a container, e.g. by means of a screw-thread 18, but the closure can only be removed if pressure is applied to the top of the outer cap 12 to flex resilient ring segments 43 and enable teeth 31 to engage between teeth 35 on the inner cap so that the inner and outer caps may be twisted off together. Areas (74), Fig. 1 (not shown), on the outer cap are of reduced thickners to enable ratchet teeth 20 to flex radially outwards and prevent friction against ratchet teeth 19 which would allow the inner cap to be turned to remove it. The caps may be of plastics material.
Patent GB-752568-A (GB)
Title: Improved process and apparatus for heat-sealing of films comprising thermoplastic material
IPC: B29C63/04
Filed: 1954-01-27
Abstract: 752,568. Heating by electric resistances. CELANESE CORPORATION OF AMERICA. Jan. 27, 1954 [Jan. 28, 1953], No. 2503/54. Class 39(3). [Also in Groups VIII and XVII] In apparatus for seaming the wrapping film 58 of a package 56 (see Group VIII), a narrow belt 11 passes over a driving pulley 12, a tension roller 27, a hollow heating pulley 16, and a heating shoe 39. Pulley 16 is heated by a stationary electric heater 37 extending into the interior of the pulley, and shoe 39 is heated by an electric heater 43 with a thermostat 44. Pulley 16- and shoe 39 contact only the central portions of belt II through a peripheral rib 33 on the pulley and an upstanding rib 45 on the shoe. Pulley 16 and shoe 39 are provided with thermal insulation. In operation, a package 56 is fed by belt 11 beneath pressure rollers 68 with the overlap 59 of the thermoplastic wrapping film 58 resting on belt 11 and the edge of the package bearing against a combined support and edge guide 61. - The temperature of the central portion of belt 11 is sufficient to form a seam in the overlap 59. The belt may be made of corrosion-resistant metal such as phosphor bronze or stainless steel ; adhesion between the package and the belt is then reduced by a thin film of a substance, such as silicone oil, to which the heated film material will not adhere, applied by a roller 55 to the outer surface of the belt. Alternatively, the belt may be made of a silicone rubber, or of woven glass fibres impregnated with a heat and adhesion-resistant substance such as polytetrafluoroethylene.
Patent GB-607091-A (GB)
Title: Improvements in or relating to sealing means for rotatable shafts
IPC: F16J15/40
Filed: 1946-01-25
Abstract: 607,091. Stuffing-box substitutes. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Jan. 25, 1946, No. 2517. Convention date, Jan. 25, 1945. [Class 122 (v)] Means for sealing a rotatable shaft 2 of a machine containing gas under pressure comprises two rings 11 that have circumferential grooves 14, 15 and the adjacent faces are recessed to form a groove 13 that communicates with the grooves 14, 15 by means of ports. The housing 12 is supplied with liquid under pressure to fill the space between the shaft and the rings 11. Any liquid escaping along the shaft is partially collected by the flanged rings 18, 21. A plunger ring 22 is provided on the shaft adjacent a labyrinth packing 28 from which liquid is allowed to drain through holes 29 to a chamber 32 connected to a vertical pipe 34 adjacent the slinger ring 22. The chamber and pipe lead from a trap which prevents passage of gas and is retained filled with liquid by a part of the liquid thrown by the slinger ring 22. Attached to the labyrinth packing housing is a chamber 39 connected to the space around the shaft 2 by a restricted opening 40 to equalize differences in gas pressure that arise due to the rotation of the shaft.