baber/WOPTO huggingface dataset:
Patent GB-1298708-A (GB)
Title: Improvements in switching circuits
Inventor: SEYMOUR LEWIS
IPC: H03K17/28
Filed: 1970-05-30
Abstract: 1298708 Time delay switching circuits L SEYMOUR 24 May 1971 [30 May 1970] 26208/70 Heading H3T A time delayed switch or pulse stretcher comprises a solid state switch 4, a first control current path therefor including the series capacitor 12, a second solid state switch 3 having its input circuit providing a second control path and its output circuit connected across the capacitor whereby if switch 3 goes off, switch 4 remains conductive while the capacitor charges. As shown, a third control current path comprises resistor 7 and diode 9. When a positive input is provided at a-a, transistor 2 is switched on, switching 3 off and diverting the control current in resistor 7, allowing 4 to go off after the charging of capacitor 7 is complete. Diode 10 prevents capacitor 12 discharging into the supply when its upper terminal goes positive with respect to the supply line and a Zener diode 13 limits the base voltage of transistor 2. The input at a-a may be speech, in which case the circuit may be used to maintain apparatus operating during speech breaks. If an A.C. is applied to a-a the resulting pulses may cause a stepwise discharge of capacitor 12 and thus pulses of capacitor current which increase in length until the current is continuous.
Patent GB-1005425-A (GB)
Title: Improvements in boron nitride
IPC: G11C11/39
Filed: 1962-07-09
Abstract: Electrically conducting boron nitride is prepared by heating at a temperature and pressure within the cubic boron nitride stable region a mixture comprising at least one catalyst consisting of the alkali metals, alkaline earth metals, lead, antimony,tin and nitrides thereof and compounds which will reduce to such metals or nitrides under the conditions of the process, a source of boron, and a source of nitrogen consisting of hexagonal boron nitride and nitrogencontaining compounds of the aforesaid catalyst materials which provide a source of nitrogen under the temperatures and pressures used, and a minor proportion of an additive consisting of selenium and/or sulphur.  The reaction may be carried out at a temperature of at least 1200 DEG  C., preferably between 1200 DEG  C. and 2200 DEG  C. at a pressure above 42,000 atmospheres, for instance 45,000 to 110,000 atmospheres.  The additive may be used in a proportion between 0.001 to 10 by weight based on the weight of the starting boron nitride.  Instead of the elements, compounds of selenium and sulphur which are converted to the elements under the conditions of the process may be used. The source of boron can be elemental boron, hexagonal boron nitride or a boron hydride.  The source of nitrogen can be hexagonal boron nitride or a compound which will produce nitrogen under the reaction conditions.  The apparatus used may be that described in Specification 830,210. Semi-conducting cubic boron nitride having at least one P-N junction may be prepared by heating a P-type semi-conducting cubic boron nitride with a mixture of ingredients such as hexagonal boron nitride, lithium nitride and either or both selenium and sulphur as additives to give an N-type semi-conducting cubic boron nitride (see particularly Example 3).  Specifications 860,499 and 973,822 also are referred to.
Patent GB-639156-A (GB)
Title: Improvements in or relating to band sawing machines
IPC: B23D55/04
Filed: 1947-09-29
Abstract: 639,156. Band saws. BOYD, W. M. Sept. 29, 1947, No. 26237. [Class 145 (ii)] [Also in Croup XXIV] The cutting stretch of a band sawing machine extends between upper and lower support members, the members being adjustable in a lateral direction to enable the cutting stretch to be inclined to the vertical to give an inclined cut. The band passes over pulleys 15, 16, 19 and 20, the driving pulley 15 being fixed and pulleys 16, 19 and 20 carried on nuts 23 so that they are horizontally adjustable by screwed rods 21 turned by hand wheels 22. A jockey pulley 18 is adjustable to enable the band to be moved across the width of the other pulleys and so equalize the wear. Guides 25, 26 are carried by a rod 27 fitted in a socket 28 of a holder 29 mounted on the stub shaft carrying the pulley 19. Two lower sliding guides 31, 32 are provided to follow the adjustment of the band. The band may be removed from one of the adjustable pulleys, the slack being taken up by horizontal adjustment of the pulley 16, the rod 27 being removed to the socket 30 if the band is removed from top pulley 19. The pulley 15 is driven from the motor pulley 37 by V-belts 35, 36 and an intermediate pulley device mounted on a shaft 46 by which the speed may be changed. A horizontal work table 13, fitted in the working gap, has a removable central portion 14 with a number of slots 14a to enable the band to pass through in a number of positions. The table is tilted about an axis X by a double-handed screw and collar mechanism 50, 51, the angle of inclination being indicated by a dial 52. A work-feed comprises a cord 44 passing round two pulleys 43 which are mounted on a shaft 40. The shaft is rotated by an arm 41 carrying a cylindrical weight 42 actuating a ratchet and pawl mounted on the shaft. To facilitate manipulation of the work the table may have anti-friction supports in the form of balls which are so located in recesses in the table as to project slightly above the level of the table.
Patent GB-796843-A (GB)
Title: Brake disc
IPC: F16D69/00
Filed: 1956-08-28
Abstract: 796,843. Disc brakes. GOODYEAR TIRE & RUBBER CO. Aug. 28, 1956 [Jan. 4, 1956], No. 26239/56. Class 103 (1). A brake disc comprises a plurality of circumferentially aligned arcuate segments 7, a radially directed relatively narrow neck 8 positioned between and joining each pair of adjacent segments, and extending between substantially the outer periphery of one segment and substantially the inner periphery of the adjacent segment so as to provide relatively free movement between the segments in a tangential direction and relatively limited movement in a radial direction. The narrow neck is formed by the metal between adjacent slots 3 and 5 extending from the outer and inner peripheries respectively. It is claimed that such a construction prevents dishing of the disc due to thermal stresses.
Patent GB-1490470-A (GB)
Title: Sulphonamido-salicylaldehydes
IPC: C07C303/40
Filed: 1976-06-24
Abstract: 1490470 Sulphonamidosalicylaldehydes BAYER AG 24 June 1976 [27 June 1975] 26289/76 Heading C2C The invention comprises compounds of the formula wherein R is a straight or branched alkyl, cycloalkyl or aryl group each of which may be substituted. They may be obtained by alkaline saponification of a compound of the formula wherein R 1 , R 2  and R 3  are (C 1 -C 4 ) alkyl optionally substituted by phenyl, halogen, (C 1 -C 4 ) alkoxy or CN-cyclohexyl or phenyl substituted by (C 1 -C 4 ) alkyl or alkoxy, CF 3 , NO 2  or halogen. They are useful as intermediates in the production of optical brighteners. Compounds of Formula II above are obtained by reacting a compound of the formula with a sulphonic acid halide of the formula wherein X is F, Cl or Br. Compounds of Formula III above are obtained by reacting the correspondingly substituted biurets with HCHO or agents which release HCHO to give 2,4-dioxo-hexahydro-1,3,5-triazines, halogenating these compounds to give 2,4 - dioxo - tetrahydro - 1,3,5 - triazinium halides and reacting these compounds with m-aminophenol to give the required compounds.
Patent GB-480620-A (GB)
Title: An electrical cut-out for use in connection with electrically heated liquid containers
IPC: F24H9/20
Filed: 1936-09-29
Abstract: 480,620. Actuation of switches: snapaction switches. UNIVERSAL BOILERS & ENGINEERING CO., Ltd., and FLETCHER, T. Sept. 29, 1936, No. 26322. [Class 38 (v)] When liquid is poured into an electricallyheated wash boiler, a float C in a chamber communicating by holes with the main part of the liquid container, rises, raising a rod D and lever E and lifting a finger E<1> away from a contact lever O so that the contact lever may be manually operated to bring a contact o into engagement with a fixed contact j in the heating circuit; as the liquid level falls the finger E<1> engages the lever O and moves it back into the open circuit position. The lever O is pivoted at its right-hand end in a bracket N, and is formed at its left-hand end with a cavity in which is placed a flexed blade spring o<1>. The left-hand end of the spring o<1> engages a fixed screw o<2>. The spring serves to hold the lever O in either of its two extreme positions. The manual operation of the contact lever O is effected by depressing a plunger p<2>, the cam shaped end of which engages and lifts the lever O. A spring returns the plunger p<2> to its original position when released.
Patent GB-712225-A (GB)
Title: Method of stabilizing fats and oils and fatty acids and compositions obtained thereby
IPC: C11B5/00
Filed: 1952-10-21
Abstract: Fatty materials are made more stable against oxidation by washing them, in liquid form, with a polar solvent containing glycine and phosphoric acid dissolved therein, the solvent being immiscible with the fatty material, and then separating the solvent solution from the fatty material.  An antioxidant for fatty material may then be added to the washed product, its effect being greatly enhanced by the washing treatment.  The fatty materials may comprise animal, vegetable or synthetic fats and fatty oils and also fatty acids, the materials specified comprising lard, cottonseed oil, soybean oil, peanut oil, marine oils, coconut oil, and corn oil, as well as oleic acid and linoleic acid.  The fatty materials are treated in liquid form at temperatures ranging from 50 DEG C. to 95 DEG C., preferably for 3 to 30 minutes.  The polar solvents specified comprise water, glycerine and aqueous alcohols such as methanol, ethanol or isopropanol. The washing solution preferably includes both the glycine and phosphoric acid in a single solution, but separate solutions may be used.  The glycine and phosphoric acid are preferably in equal proportions; the phosphoric acid should not be more than twice the weight of glycine.  Concentrations of 0.01 to 0.5 per cent. by weight of each in the washing solution are adequate. Materials furnishing glycine or phosphoric acid under the conditions described may be used; the glycine may be present as a glycine salt, such as the sodium salt, or as an amino acid composition containing glycine obtained by hydrolysis of protein matter, such as soyabean meal; the phosphoric acid may be added as the sodium salt.  Usual washing procedures may be used with agitation means. The fatty material may be separated from the washing solution by settling, centrifuging &c.  The antioxidants specified comprise quinones and hydroquinones, organic acids such as citric, ascorbic, tartaric and amino acids and their esters and salts, phenolic antioxidants such as alkylated hydroxy anisoles, gallates such as propyl gallate, and tocopherols.
Patent GB-616394-A (GB)
Title: Improvements in, or relating to, band conveyors
IPC: B65G47/76
Filed: 1946-09-03
Abstract: 616,394. Endless-belt conveyers. SHEEPBRIDGE COAL & IRON CO., Ltd., and BADDELEY, A. W. Sept. 3, 1946, No. 26462. [Class 78 (i)] A plough for discharging material from a belt conveyer comprises a rigid plate supported vertically over and diagonally across the belt by resilient means to permit a limited upward movement thereof, a flexible wiper secured to the plate, and means below the belt for maintaining it in contact with the wiper. In the embodiment shown, the plate 10, suspended from a member 17 of the conveyer framework is provided with a wiper 16 of india rubber and the belt 11 is held in contact with the wiper by a member 22 'secured to the supporting structure 13. The plate is suspended by bolts 19 which are secured to it at one end and pass through bosses 18 on the member 17 to be supported by nuts 20, spring 21a within the bosses bearing against the member 17 and the bottom of casings 21 welded to the bolts. The plate is adjustably mounted on members 12 of the conveyer framework by bolts 15 engaging in slots 14 in the member 12. The wiper is formed with slots 16a to allow it to be adjustably secured to the plate by studs 16b.
Patent GB-323005-A (GB)
Title: Improvements relating to pneumatic mechanism for the automatic operation of musical instruments
Filed: 1928-09-17
Abstract: 323,005. Aeolian Co., Ltd., Cook, C. F., and Palmer, H. W. Sept. 17, 1928. Actions, pneumatic; player-pianos, - The rectangular striking-pneumatics a<1>, a<2> are hingeless and operate the action-actuating levers c from the middle of their movable leaves. The pneumatics are secured in two rows, the lower to a channel-board d connected to a conduit board e, the upper to the valve box e<1> and a front conduit board f. The movable leaves are adjustably connected to the levers c by rods c<1>, b the upper ends of which, on collapse of the pneumatics, are respectively received in the suction apertures a<3> or in specially provided recesses a<7> the conduits f<1> of the upper pneumatics being non-central. The rods b of the upper pneumatics pass through apertures or slots in the channel board d, and between the lower pneumatics.
Patent GB-942343-A (GB)
Title: Apparatus adapted to be pumped through a pipe
IPC: E21B23/10
Filed: 1961-07-24
Abstract: 942,343. Boreholes &c. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. July 24, 1961 [July 25, 1960], No. 26761/61. Heading E1F. Apparatus adapted to be pumped through a pipe 10 comprises a packer 12 held on a body 11 by caps 14, 15, a passage 23, 24 connecting the interior of the packer with a space outside the apparatus, and a central flow passage 30; 30a through the body and in which is located a valve 33 opening at a pressure greater than that needed to expand the packer. A well tool carrier comprises a body jointed at 31, and carrying a second packer 13, a fishing head 22 and a tool latch 27. When pressure is applied above the carrier, fluid enters the packer 12 through the aperture 24 to cause the packer 12 to seal against the well pipe 10 so that the apparatus is forced downwards. Should the apparatus encounter a seat 34 the valve opens so that fluid pressure forces the tool from the latch. Pressure applied below the apparatus moves it upwards, fluid entering the packer 13 through an aperture 25 to seal the packer 13 against the pipe. In a modification the positions of the packers may be reversed, and the fishing head and tool latch dispensed with. In further modifications a single packer and two pairs of packers are used. The apparatus may be used for removing paraffin coatings and hydrocarbon plugs from the pipe, and for delivering to a selected part of the pipe a treating fluid such as a corrosion inhibitor.
Patent GB-429725-A (GB)
Title: Improvements in or relating to photo-sensitive electric discharge devices and circuit arrangements incorporating the same
IPC: H01J40/16
Filed: 1934-09-18
Abstract: 429,725. Photo-electric cells. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London. - (Assignees of Nelson, H.; 111, Halsted Street, East Orange, New Jersey, U.S.A.) Sept. 18, 1934, No. 26829. Convention date, Sept. 19, 1933. [Class 39 (i)] A photo-electric cell has a photo-electric cathode, a thermionic cathode and an anode, the potential between the anode and the thermionic cathode being less than, and that between the anode and the photo-electric cathode greater than the ionization potential of the gas filling, so that ionization produced by the photo - electrons sets up a relay action in the thermionic discharge. In one arrangement the photo-electric cathode consists of a plate or of a perforated cylinder surrounding a grid-shaped anode and a V- shaped filament cathode. As shown, a straight filament cathode 13 is surrounded by a helical wire anode 17 with end collars 18, 19 and a flat photo-electric cathode 21 is arranged edgewise to minimize the surface exposed to light from the filament; for this purpose a metal strip 23 may be mounted between the collars. The filling may be argon at a pressure of 100-120 microns.
Patent GB-1498379-A (GB)
Title: Means for holding dies in a jaw crusher
IPC: B02C1/10
Filed: 1976-06-28
Abstract: 1498379 Jaw-crushers BARBER-GREENE CO 28 June 1976 [26 Nov 1975] 26894/76 Heading B2A - The fixed jaw of a jaw-crusher plate 38 Fig. 5 is secured to the side walls 42 by wedges 56 which are bolted to the side walls, and outer pockets 50 in the fixed jaw plate. Tightening the bolts 76 tightens the wedges in the pockets; due to the rocker-like shape of each wedge. Cheek-plates 62, 64 have recesses 58, 60 to receive the wedges and align them. The cheek-plates are aligned by stopblocks 66. The plate 38 is further secured by retaining keys 82, 84 Fig. 2 secured to the supporting wall 40 and received in cored pockets 86 in the rear wall of the plate 38.
Patent GB-1099822-A (GB)
Title: Improvements in or relating to apparatus and methods of bending and toughening a sheet of glass
IPC: C03B27/052
Filed: 1963-07-08
Abstract: An apparatus for bending and toughening glass sheets comprises, in combination, complementary bending dies 1, 2 mounted to be advanced to a heated sheet 10 vertically suported therebetween to bend the sheet, both dies 1, 2 comprising a framework 5a, 5c and at least one of the dies carrying a continuous thin metal sheet 5b bent to the required curvature, <PICT:1099822/C1/1> and quenching means 6, 7 with air jets 8, located in position close behind the respective dies 1, 2 for operation immediately the dies are moved out of their path, thus permitting the successive bending and tempering without moving the glass.  Each frame 5c is mounted on bars 5a mounted to slide on posts 3, 4 by suitable means 5, both dies having recesses 13 to accomodate the suspending tongs 11. Both dies ae covered with glass silk.  The dies are moved into contact with a sheet 10 by means 12 after which they are retraced and quickly moved downwardly to allow the quenching streams from jets 8 to act upon the sheet.  The quenching means 6, 7 may perform a slight oscillatory movement and may also be moved slightly nearer (say 2 inches) to the glass sheet during quenching. For glass sheets of thickness less than 5/32 inch it is possible to commence quenching within six seconds of the glass emerging from the furnace.
Patent GB-408305-A (GB)
Title: Improved process for the production of disc wheels
IPC: B21K1/28
Filed: 1932-09-30
Abstract: 408,305. Making wheels. VEREINIGTE STAHLWERKE AKT.-GES., 67, Breitestrasse, D³sseldorf, Germany. Sept. 30, 1932, No. 27177. Convention date, March 10. [Classes 83 (ii) and 83 (iv).] Forging-dies; corrugating.-Disc wheels or the like are produced by a die pressing operation in which the disc part between the hub and the rim and its junction to the rim are pressed in alternate axial directions and the junction is simultaneously displaced relatively to the rim. Rolled discs 1 (dotted) with the fillets between web and hub and web and rim of large radii of curvature R1, R2 are given alternate radial corrugations by the dies 4, 5, the final shape 6, 7 showa reduction in the radii of the fillets r1, r2 and r3, r4. The dies are cone-shaped where they engage the periphery of the wheel to facilitate removal of the wheel, a ridge 10 is also provided on the rim for this purpose. Specification 351,246 is referred to.
Patent GB-451314-A (GB)
Title: Improvements relating to speed measuring apparatus
IPC: G01P3/36
Filed: 1935-10-02
Abstract: 451,314. Speedometers. KASSLER, L., 3657, Broadway, New York, U.S.A. Oct. 2, 1935, No. 27182. Convention date, March 7. [Class 106 (iii)] A speedometer of the fluid-drag type, particularly adapted for use on a child's bicycle, comprises two identical cup-shaped impellers 31, 32 cut-away to form inclined blades 38 and mounted so that the free ends of their flanges 34 are almost touching, the lower impeller 31 being driven from a flexible shaft 12 carrying a friction wheel 61 bearing on the bicycle rim or tyre. The upper impeller 32 actuated by the air delivered by the lower impeller moves a pointer 29 against the restoring action of a spring 58. The shaft 60 of the friction wheel 61 is mounted in a yoke 65 pivotally mounted on a shaft 66 which is surrounded by a helical spring arranged so that the wheel 61 is spring-pressed against the tyre. The bracket 71 supporting the wheel 61 provides for suitable adjustments.
Patent GB-743757-A (GB)
Title: Improvements in or relating to printing surfaces
IPC: B41N1/12
Filed: 1953-10-05
Abstract: 743,757. Printing-surfaces. ARNOLD, Ltd., P. & J., and SYDNEY, C. L. Nov. 10, 1954 [Oct. 5, 1953], No. 27222/53. Class 100 (2). A printing-surface of the kind comprising a sheet or pad having certain areas in relief adapted to transfer ink to a sheet of paper by the application of pressure has its working, ink-absorbing part made of a microporous or a macroporous polymer of vinyl chloride or a copolymer of vinyl chloride with a minor amount of vinylidene chloride, vinyl acetate or an acrylate, the microporous structure being characterized by interconnecting cells which are not sealed at the working face. The microporous material may be manufactured as described in Specifications 565,022 and 576,657, [both in Group IV]. Fig. 1 shows a hand stamp having a handle 1 and a base-plate 2 to which is affixed a sheet of microporous material 3 by an adhesive 4. A layer of rubber may be interposed between the base-plate 2 and the adhesive 4, Fig. 2 (not shown), or a layer of macroporous material, e.g. as described in Specifications 727,679 and 728,600, [both in Group IV (a)], which acts as an ink reservoir may be attached to the base-plate 2 so as to be in communication with,the material 3, Fig. 3 (not shown). The microporous material may be made into a plate suitable for attachment to a metal plate of a priting press. The image may be made on the microporous material by engraving, or by extrusion between engraved rolls so long as the interconnecting cells do not become sealed at the surface.
Patent GB-225535-A (GB)
Title: Method to separate paraffins from liquid carbohydrates
IPC: C10G73/28
Filed: 1924-11-14
Abstract: In the separation of waxes from liquid hydrocarbons, the waxes of greater and those of lower specific gravity than the liquid are first separated by cooling, e.g. to -15 DEG  C., and centrifuging or settling the hydrocarbon liquid alone or after the addition of only sufficient gasolene or other diluent to operate the process efficiently.  The liquid is then diluted sufficiently to enable the remaining waxes to be separated.
Patent GB-929913-A (GB)
Title: Improvements in or relating to the production of sheets of thermosetting artificial resins
IPC: B29C48/38
Filed: 1960-06-23
Abstract: A sheet of thermosetting resin is extruded by feeding the resin 5 between two heated rollers 1, thus fusing it, and then feeding it into a heated chamber 3 from whence it passes through a slot 4 of variable width.  The resin 5 which may be in the form of powder, granules, blocks, or in molten form, is fused by contact with the rollers 1, the layers of fused material adhering to the rollers being stripped off by contact doctor blades 2.  The rollers can be <PICT:0929913/IV(a)/1> <PICT:0929913/IV(a)/2> driven at different speeds, and a filter and a heated torpedo can be disposed in the chamber 3 in order to increase the homogeneity of the extruded sheet. In a modification, Fig. 2, a pair of contacting rollers 10 which may have teeth is mounted in the chamber 3.  If desired, scraper blades may be mounted for longitudinal movement within the chamber 3 so as to remove any resin adhering to the walls of the lower part 8 of the chamber.
Patent GB-1522550-A (GB)
Title: Drawing instrument
IPC: B43L9/16
Filed: 1977-06-10
Abstract: 1522550 Compasses and dividers HELIX INTERNATIONAL Ltd 10 June 1977 [30 June 1976] 27336/76 Heading B6P Compass or divider piont 2 is produced by inserting a piece of wire or rod into hole 8 and then cutting it to length, if required, and sharpening it to produce pointed end 2a while it is in position.