baber/WOPTO huggingface dataset:
Patent GB-1006826-A (GB)
Title: Improvements in or relating to sound transducers
Inventor: WOOLLETT LEONARD GEORGE
IPC: G01H11/06
Filed: 1960-06-23
Abstract: 1,006,826. Electroacoustic transducers. L. L. SCHWARZ. Sept. 22, 1961 [June 23, 1960], No. 22054/60. Heading H4J. The transducer, particularly an electrostatic transducer, comprises at least one perforated fixed electrode and two sets of parallel members, one at least of which is applied to the surface of a fixed electrode, these members being applied to opposite sides of a diaphragm to locate it relatively to the fixed electrode(s). The parallel members may be in the form of sets of threads wound on the electrode(s) and may give the diaphragm a corrugated shape. Fig. 2 shows one corner of a fixed electrode formed by a sheet of perforated zinc wound with a nylon thread 6 over which a conductively coated polythene or P.V.C. sheet is held in place by a second winding of threads 16. To form a push-pull arrangement two such transducers may be mounted back to back, Fig. 5 (not shown), or alternatively two backing sheets 24 and 41, Fig. 7, may be wound with nylon thread and support between them a polythene diaphragm which is composed of a folded sheet one interior face of which has been coated with graphite, the assembly being clamped together by means of plastic clips 48 to form to a sandwich contruction shown in section in Fig. 9.
Patent GB-1177181-A (GB)
Title: Production of Olefines, particularly Ethylene, by Thermal Cracking of Hydrocarbons
IPC: C10G9/20
Filed: 1967-05-12
Abstract: 1,177,181. Thermal cracking. BADISCHE ANILIN- & SODA-FABRIK A.G. 12 May, 1967 [14 May, 1966], No. 22121/67. Heading C5E. C 2 -C 30  hydrocarbons are vaporized in a convection zone and thermally cracked in an externally heated coiled tube having a circular cross-section situated in a radiation chamber, at 800-900‹ C. in the presence of 0À3-1À0 kg. of steam per kg. of hydrocarbon wherein the residence times are less than 0À7 sec., the heat load is more than 40,000 col./sq. m./h. and the supply of heat to the individual tube sections by radiation from a plurality of burners at external tube wall temperatures of 880-1100‹ C. is regulated so that the external tube wall temperatures do not rise over the whole course of the coiled tube by more than 120‹ C., and are preferably substantially constant. In an example the cracking of a light naphtha (bp. 30-70‹ C.) to yield ethylene in 29À5% yield is described. The control of the external tube wall temperatures may be affected by using burners of differing nozzle size, or by varying the air supply to the burners. The coiled tube may be arranged so that the distance between parallel portions decreases towards the outlet from the radiation chamber.
Patent GB-338504-A (GB)
Title: A new or improved apparatus for playing a game of skill
IPC: G07F17/36
Filed: 1929-07-19
Abstract: 338,504. Ford, R. C. July 19, 1929. Tivoli billiards and the like. - Coin-freed apparatus, adapted for use in a game of the kind wherein a slide is projected up a pair of guide rails, is characterized in that the raising of the slide so that it comes to rest at any one of a number of defined winning positions effects the delivery of coins from a coin box. If the slide is unsuccessfully raised, a pivotal pawl mounted thereon engages one of the teeth of a fixed rack 21, Fig. 8, but if successfully raised the pawl engages a tooth 22<a> of the rack 22 slidably mounted on the rack 21, and the rack 22 then falls until the slide reaches the winning position corresponding to the tooth 22<a>, thereby depressing the counterweighted lever 23 which through a projection 23<b> disengages the spring latch 26 from the tubular slide 25a of the coin box 25. The slide 25<a> is thereupon raised by a spring 27, Fig. 4, to the position shown in Fig. 10, whereby coins previously collected in the slide fall through an opening 25<c> into the delivery shoot 8. After inserting a coin and turning a handle provided, the sleeve 12 is rotated and through a chain 14, which passes under a sprocket wheel 15 on a one-way clutch on a cam spindle, rotates the cam 13, the position of which determines by the deflector 24 whether the coin on leaving the coin shoot 17 falls to a till or into the coin box 25. Simultaneously with the movement of the cam 13, a catch plate 14<a> on the chain engages the pin 29b on the toggle links 29, pulling the latter down and so rotating a bar to which the racks 21, 22, are attached whereby the slide, previously supported thereon, falls to the play position. In the case of a previous win, a projection 31 on the rod 30 en. gages a lug 25f on the slide 25<a> and forces the latter down until it is engaged by the spring latch 26. Another projection 32 on the rod 30 depresses the lever 34 whereby the rod 33 bears on the lever 23 and raises the rack 22 to its normal position. When the deflector 24 is in a position to direct coins to the till, a peg 13<a> on the cam 13 co-operates with the levers 34, 33, 23 to lock the slidable rack 22 in the raised position so that the slide will not indicate a win if it lodges on said rack.
Patent GB-1378787-A (GB)
Title: Vehicle suspension systems
IPC: B60G17/015
Filed: 1972-05-11
Abstract: 1378787 Preventing lateral canting HONDA GIKEN KOGYO KK 11 May 1972 [12 May 1971] 22240/72 Heading B7D A vehicle suspension system comprises a detecting device S which produces a fluid pressure in response to centrifugal force when the vehicle runs around a curve, a fluid distributer device C operated by the fluid pressure to adjust the amount of fluid in hydropneumatic shock absorbers B1, B3 and B2, B4 on opposite sides of the vehicle so that rolling of the vehicle body is reduced, and feedback means F which influences the detecting device S upon operation of the distributing device C. The detecting device S includes a weight 3 displaceable by centrifugal force against the centring effect of springs 6, 6<SP>1</SP> to cause a lever 2 to obstruct one of orifices 17 and create increased pressure at one end of a spool valve 8 which is displaceable against spring-loading to pressurize one of lines 15, 16. The distributer device C includes a piston 23 displaceable in a cylinder 20 in response to pressure in one of the lines 15, 16 and connected by piston-rods 30, 31 to pistons displaceable in cylinders 21, 22 to adjust the quantity of fluid in the shock absorbers B1, B2 and B3, B4 respectively. The feedback means F comprises linkage 34, 35, 36 connected to the piston-rod 30 and arranged to vary the loading exerted on the weight 3 by the springs 6, 6<SP>1</SP>. Valves V1, V2 cut-off communication between the shock absorbers on opposite sides of the vehicle while the vehicle is travelling around the curve.
Patent GB-618466-A (GB)
Title: Improvements relating to means for measuring the working speed of metal tube and extrusion presses
IPC: G01P3/52
Filed: 1946-07-26
Abstract: 618,466. Indicating speed electrically. SOC. ANON. POUR L'INDUSTRIE DE L'ALUMINIUM. July 26, 1946, Nos. 22346 and 22347. Convention dates, July 27, 1945, and Sept. 25, 1945. [Class 40 (i)] In a metal tube or other extrusion press, the working speed is measured by moving a magnet axially relative to and within a solenoid in accordance with the press-ram movements and measuring the induced E.M.F. in the solenoid to indicate the speed. An electromagnet may be used, but preferably the ram cross-head 2 moves a bar magnet 1 axially within a solenoid 4 mounted with the magnet in an iron tube 5. The induced E.M.F. is indicated by a mirror galvanometer 10 on a scale 11. The meter is used with a slide-rule-like device comprising three sliders 13, 14, 15 bearing logarithmic scales. Movement of slide 13, calibrated in correspondence with the galvanometer scale 11, varies the meter sensitivity by inserting resistors in series therewith step-by-step. The scale 14 indicates the weight per metre of the extruded product and carries an adjustable cursor 16 and fixed cursor 17. The slider 15 bears an upper scale of delivery speeds and a lower scale of specific gravities which co-operates with a fixed cursor 18. By appropriate scale settings the device may be used for (1) determining the galvanometer deflection for a prescribed delivery speed and (2) the delivery speed at any time. During the rapid return strokes of the press-ram, the galvanometer is protected by being short-circuited or open-circuited, in known manner, and is also protected against jerky delivery of the extrusion product, e.g. by a parallel connected capacity or glowdischarge tube.
Patent GB-1181258-A (GB)
Title: Method of Suppressing Crumps in Rock Surrounding a Mineral Bed Being Worked in a Mine
IPC: E21C41/00
Filed: 1967-05-15
Abstract: 1,181,258. Crump suppression in mines. GLOWNY INSTYTUT GORNICTWA. 15 May, 1967 [16 May, 1966], No. 22356/67. Heading EIF. A method of suppressing crumps in rock surrounding a mineral bed 2 being worked in a mine involves shooting with explosive 9 the zone of maximum stress in the surrounding rock 4 to loosen said rock to relieve stress in the zone, which is in the form of a triangular prism 5 whose vertex lies at the edge of unmined mineral 6 in a bed 7 above or below the bed being worked. Explosive 9 is placed in the upper part of a hole 3 drilled at 25‹ to 30‹ from the heading 1 of the bed 2 being worked.
Patent GB-1393707-A (GB)
Title: Extrusion process
IPC: B29C48/05
Filed: 1972-05-12
Abstract: 1393707 Extruded strand cooling MONSANTO CO 12 May 1972 [14 May 1971] 22358/72 Heading B5A A plurality of thermoplastics strands 12, are extruded from orifices 11 of a die 10 and cut into pellets, after being cooled in passage through a water bath 16, the water level of which is below the die centre line 13 and into which the strands 12 are guided around a freely rotatable floating roller 33, beneath a non- rotating bar 23. The roller 33 functions to cause adherance of a broken strand 15 to an adjacent unbroken strand or strands 12, and prevent entanglement which would otherwise arise and cause jamming of the cutter. The roller 33, e.g. of aluminium, is rotated by the engaging strands 33, and is mounted for free rotation on stub axles freely vertically displaceable along slots, at either side of the bath and which also function to restrain displacement of the roller 33 towards the die 10. The bar 23, e.g. of soft steel, freely locates at vertical slots, at either end thereof, around vertical ribs of bath side brackets 25, and a vertical baffle 24 is welded to the bar 23 to extend upwardly therefrom. The face of die 10 may be vertical or inclined.
Patent GB-807821-A (GB)
Title: Improvements in or relating to moulding or remoulding pneumatic tyres
Inventor: ADAMS ARTHUR LESLIE
IPC: B29D30/54
Filed: 1955-08-04
Abstract: 807,821. Moulds for tyres. DUNLOP RUBBER CO. Ltd. July 18, 1956 [Aug. 4, 1955], No. 22384/55. Addition to 759,390. Class 87(2).  The tyre mould described in the parent Specification (which is adjustable in width by alteration of the spacing of side-plates combined with the use of an appropriate tread ring for each size, with associated heating means) is modified by an extension 5, integral with or connected to one side-plate and slidable within the bore of the other side-plate, which is smaller in outside diameter than the minimum diameter of the tapered bead-base moulding surfaces 2a, to ensure easy sliding thereon of a cover to be remoulded. Further extensions may be added.
Patent GB-697621-A (GB)
Title: Improvements in or relating to combustion chamber apparatus for power cartridges
Inventor: HUTCHISON ALEXANDER CANTLAY
IPC: F02N99/00
Filed: 1950-09-12
Abstract: 697,621. Generating combustion products under pressure. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 7, 1951 [Sept. 12, 1950], No. 2240/50. Class 51(i) In an apparatus for generating combustion products under pressure by the burning of a cartridge 20, the gases passing through a perforated trap 2 and then through a pressure-reducing nozzle 3 to the point of use, a safety bursting disc 15 and a spring-loaded relief valve 11 are provided, the latter being set at a pressure less than that at which the bursting disc fails but greater than a predetermined working pressure in the combustion chamber. The safety bursting disc and the relief valve may be fixed either upstream or downstream of the perforated trap. The relief valve comprises a spring- loaded ball 9, the compression of the spring being adjusted by means of the screw 13. The cartridge firing elements may be electric or percussion type as shown in the Figure. The apparatus is intended for use in conjunction with an engine starter motor of the reciprocating piston type.
Patent GB-381651-A (GB)
Title: Improvements in the manufacture of tubes
IPC: B21B17/14
Filed: 1931-08-07
Abstract: 381,651. Rolling tubes. WELLMAN SEAVER ROLLING MILL CO., Ltd. and SMITH, S., Victoria Station House, Victoria Street, London. Aug. 7, 1931, No. 22406. [Class 83 (iv).] Tubes to be rolled are connected end to end by ferrules and passed through the mill as one length thus eliminating a thickened end on each length as in Specification 180,322, [Class 83 (iv), Metals, Working].
Patent GB-767540-A (GB)
Title: Improvements in or relating to vehicle couplings or hitches
IPC: B62D49/06
Filed: 1954-07-31
Abstract: 767,540. Road vehicle couplings. SENTINEL (SHREWSBURY), Ltd., and HAMBLIN, L. F. Aug. 2, 1955 [July 31, 1954], No. 22416/54. Class 103(5). An arrangement for weight transference from a trailer to a tractor comprises a Y-shaped tow-bar universally jointed by pins 18, 20 and 22 to the tractor frame 23 and pivoted on a transo verse axis by a bar 24 carried in bearings in brackets 25 which together with brackets 26, 27 form part of a fitting 12 into which the trailer king-pin 13 is secured. A torque applied to the rod 24 by means of the toothed quadrant 32 secured to it is transmitted via splines 28<SP>1</SP> to a sleeve 28 to which a slipper 29 is non-rotatably secured and acts on the rollers 30 against an arcuate surface 31 secured to the trailer king-post 15. Load transference may therefore be controlled from the tractor by operation of the cable drum 41. The torque may be applied to the rod 24 by means of a lever actuated by a mechanical or electrically operated screw-and-nut mechanism. Specification 775,554 is referred to.
Patent GB-479305-A (GB)
Title: Improvements in television
IPC: H01J29/89
Filed: 1936-08-14
Abstract: 479,305. Television. RADIOAKT.- GES. D. S. LOEWE. Aug. 14, 1936, No. 22442. Convention date, Aug. 19, 1935. [Class 40 (iii)] A rectangular plane 6 is imaged as a trapezium on a scanning device 8 by two lenses 2<1>, 2<11>, relatively movable along their common axis 7, the distance between object and image also being variable, so that the trapezium can be modified as desired. The lower edges of the object and image are positioned at twice the focal distance of the lens system so that the magnification is unity. As the focal length of the system is varied by the spacing of lenses, the magnification of the upper edge varies to vary the trapezium. As shown, the object area is a film gate movable by a screw 11, while the scanning device is a disc. The image area may be the mosaic screen of an iconoscope. The arrangement is also applied to a cathode ray receiver, the distance between the trapezium produced by the scanning beam on an inclined fluorescent screen and the rectangular image thus being variable, while the image is maintained at the same size and rectangular.
Patent GB-644744-A (GB)
Title: Improvements connected with apparatus for the crush forming of grinding wheels
IPC: B24B53/07
Filed: 1948-08-26
Abstract: 644,744. Profiling grinding-wheels. COVE NTRY GAUGE & TOOL CO., Ltd., JELLIS, M., and DARBY, W. Aug. 26; 1948, No. 22508. [Class 60] Ribbed grinding wheels are crush-profiled by an apparatus in which a rotatable member turns a lead screw 4 to feed the crushing roller 1 slowly, and axially displaces the lead screw by cam means or the like to feed the crushing roller rapidly. The rotatable member is in the form of an annularly-shaped face cam 11 provided with an arm 12 in spring- loaded engagement with a profile cam 14. The cam 11 is connected with a flanged member 7 secured to the lead screw by means of freely-mounted plungers 19, springs 20 serving to hold the member 7 in contact with the plungers. The motor for driving the cam 14 has a recess in its shaft to operate a switch which breaks the motor circuit after each complete revolution. The upper portion of the lead screw is in splined and slidable engagement with a hand-wheel 23 and a ratchet wheel 21 which co-operates with a pawl 22 secured to the cam 11, while the screwed portion of the lead screw engages a nut 6 freely mounted in the slide 2 and biassed upwardly by springs 26 against a stop plate 25. When this nut is downwardly displaced relatively to the slide it operates a switch for the grinding-wheel motor by means of a plunger and a lever. In operation, the grinding-wheel is initially crushed by manually operating the slide 2, after which the crushing roller is withdrawn by an amount corresponding to the lift of the cam 11. A scale 34 indicates the extent of withdrawal. The cam 14 is now set in rotation to turn the cam 11. This causes an axial advance of the lead screw and the crushing roller through the plungers 19, the'resistance to further movement of the crushing roller caused by its contact with the grinding wheel displacing the nut 6 to start the grinding wheel motors: Further rotation of the cam 11 due to a rise on the cam 14 causes the'lead screw to be rotated through the pawl and ratchet mechanism to feed the crushing roller into the grinding wheel. A dwell on the cam 14 now allows crushing to continue for a predetermined period after which a sharp fall produces reverse rotation of the cam 11 so that the pawl rides over the ratchet teeth and the cam 11 allows the lead screw to be retracted by the springs 26, the movement of the nut 6 switching off the grinding wheel motor. A shroud 39 provided with a small aperture may be used to enclose the ratchet wheel, the position of the aperture determining the point at which the pawl becomes operative and hence the feed of the crushing roller. The shroud is locked in adjusted position by a screw 41.
Patent GB-239058-A (GB)
Title: Improvements in imitation candle lamps
IPC: F21V37/00
Filed: 1924-09-24
Abstract: 239,058. Griffin, W. Sept. 24, 1934. Candlesticks, lamps in form of.-An imitation candle lamp comprises a pillar A rigidly secured in an oil-tight manner to a base B and a fitting consisting of a wick burner C and a perforated tube E, which is secured in the pillar A by a bayonet joint D. The tube E contains the wick and cotton wool or other absorbent material G adapted to be saturated with oil previous to the insertion of the tube in the pillar. The upper part of the tube E is fitted with an internallythreaded ring M which screws on a downward extension J on the burner C.
Patent GB-177112-A (GB)
Title: Tandem seats for motor cycles
IPC: B62J1/14
Filed: 1921-08-25
Abstract: 177,112. Lillesoe, J. Aug. 25, 1921. Seat attachments.-A tandem or pillion seat for motor-cycles comprises a bifurcated lever pivoted at 20 to a supporting-frame 18, 22, one arm of the lever forming the frame 2 of the seat 1 and the other arm 13 being connected by a spring 8 to the supporting-frame. The connections of the two ends of the springs to the parts 13, 18 are adjustable.
Patent GB-386006-A (GB)
Title: Improvements in or relating to washing machines, particularly for dishes and the like
IPC: A47L15/24
Filed: 1931-05-07
Abstract: 386,006. Dish-washing machines. HOBART MANUFACTURING CO., Troy, Ohio, U.S.A.-(Assignees of Johnston, H. L. and Meeker, D. A. ; Troy, Ohio, U.S.A.) May 7, 1931, No. 22684/32. Convention date, Jan. 17, 1931. Divided on 378,417. [Class 138 (i).] The dishes or racks containing dishes are supported on a reciprocating carrier 201 and advanced through the machine in a series of intermittent movements, and means are provided whereby the dishes may move to and fro in a position beneath the washing jets 220 for as long a period as desired. In the construction shown, the dishes are carried by a rack which, on the backward movement of the carrier 201, is adapted to engage a pawl 212 fixed to the machine, whereby relative movement takes place between the rack and the carrier. The pawls located below the washing jets 220 can be moved manually into inoperative positions, as described in Specification 378,417, so that as the rack reaches the washing station, it oscillates backwards and forwards with the motion' of the carrier, until it is pushed forward by a succeeding rack. The forward movement of the racks, instead of being dependent upon the friction of the rack on the carrier, may be positively ensured by pawls 225 carried by the carrier 201.
Patent GB-301119-A (GB)
Title: Process of making 1.3-diamino-2-hydroxy-anthraquinone from 4-hydroxy-ortho-benzoyl-benzoic acid, the intermediate products and the process of making the same
IPC: C09B1/18
Filed: 1927-08-29
Abstract: 301,119. Gubelmann, I., Weiland, H. J., and Stallmann, O. Aug. 29, 1927. 1 : 3-Diamino-2-hydroxyanthraquinone is produced by nitrating 4<1>-hydroxy-o-benzoylbenzoic acid to form 3<1> : 5<1>-dinitro-4<1>-hydroxy-o-benzoylbenzoic acid, reducing the latter to the corresponding diamino body, and closing the ring by elimination of water. In examples, nitration acid is used in the first step, the mononitro body first formed being further nitrated, and for the reduction, iron and dilute acids, e.g. dilute acetic acid, or tin and dilute hydrochloric acid are used. The reduction may also be effected electrolytically, by means of sulphides, or catalytically with hydrogen. The final step of ring closure is effected by means of sulphuric acid.
Patent GB-921334-A (GB)
Title: Continuous-casting mould
IPC: B22D11/041
Filed: 1959-07-02
Abstract: 921,334. Continuous casting-machines. MANNESMANN A.G. July 2, 1959 [July 2, 1958], No. 22728/59. Class 83 (1). In a continuous casting mould consisting of at least two wall sections, each wall section 2, Fig. 2, is shaped in its cross-section symmetrically in relation to at least one axis II so that the sections may be reversed or inverted or both when one side is worn or distorted. If the wall sections 12, Fig. 6, are joined by corner connections 14, these last are symmetrical about their diagonal axes XII, XIII. The tongue and groove connection of the sections comprises a groove 16, Fig. 7, bevelled at 17 in one section and a tongue 19 having unequal side edges 20, 21, the arrangement being such that bulging in the direction of the arrows which occurs due to the heating of the interior wall surface and the cooling of the external wall surface tends to lock the mould sections together.
Patent GB-144161-A (GB)
Title: Improvements in and relating to indicators for distance travelled for use in aircraft
IPC: B60B3/08
Filed: 1919-09-16
Abstract: 144,161. Pollen, A. H., and Landstad, H. F. Sept. 16, 1919. Winding-indicators.-In apparatus for showing the distance made good in aircraft, in which are employed friction disks oppositely driven by a spring motor controlled by a governor, an indication when it is necessary to rewind the clockwork motor spring is given by a bar 38. The spring when wound up forces back a pawl-carrying lever 35 against the action of a spring 37 and holds the rod 38 in the position shown. When the driving spring is nearly run down it is overcome by the spring 37 which then protrudes the telltale rod 38 through the casing.