baber/WOPTO huggingface dataset:
Patent GB-261591-A (GB)
Title: Improvements in built-up cutters for milling and other machine tools
IPC: B23C5/20
Filed: 1926-02-09
Abstract: 261,591. Herbert, Sir A., and Lloyd, A. H. Feb. 9, 1926. Milling-cutters.-In built up cutters for milling &c. machines of the kind wherein the blades are located in grooves spaced round the body, the wadls of the grooves being deformable to cause them to grip the blades, the deformation is caused by one or more wedges whose axes 1 extend transversely to the slit and whose line of travel is between the top and bcttom of the slit. Means are provided for securing and extracting the wedges. The body 3 is provided with straight grooves 2 in which the blades 11 are inserted and subsequently machined to helical formation. Slots 4 are formed between the grooves having conical holes 5 spaced along their lengths to receive wedges 6 of circular section which are driven in and then secured by screws 8. A tapped hole 7 in each wedge allows extraction by means of a set-screw 19, Fig. 3. Instead of several conical wedges a single wedge may extend along substantially the whole length. of each siot 4, and the grooves 2 may be helical instead of straight. The slots 4 may be parallel to the sides of the grooves 2 or inclined thereto. If the blades are inserted in the end face of a cutter they are arranged radially or inclined to radial lines and the wedges ate inserted transversely to the end face.
Patent GB-539204-A (GB)
Title: Means for reproducing motion
IPC: G08C19/42
Filed: 1940-02-29
Abstract: 539,204. Electric control and indicating systems. BENDIX AVIATION CORPORATION. Feb. 29, 1940, No. 3797. Convention date, March 2, 1939. [Class 40 (i)] The transmitter and receiver in a resultant field system each comprise a rotor magnet and a stator carrying single-phase and multi-phase windings, the single-phase windings being energized from an A.C. source of frequency f, and in conjunction with the uni-directional fields of the rotors, giving rise to currents of frequency 2f in the inter-connected multi-phase windings which balance out when the rotors are in corresponding positions. The system may be used for gun or other control but, as shown, indicates at 46 the pressure of an aneroid 41 connected by gearing to the transmitter rotor 35. The stators comprise high permeability rings carrying the single-phase windings 14, 23 energized by source 32, and pole pieces carrying the three-phase windings 15, 17, 24, 26. The rotors are circular magnets. The A.C. flux due to the single phase windings saturates the stators twice per cycle so that the unidirectional flux due to the magnet rotors has two minima per cycle and pulsates at frequency 2f. When the rotors are not in corresponding positions, the resulting currents of frequency 2f in the three-phase windings at the receiver give rise, owing to the periodic saturating effects of the single-phase winding, to an unsymmetrical A.C. flux producing a resultant magnetic field which reacts with the receiver rotor to move it into correspondence with the transmitter. Specification 22307/01, [Class 40], is referred to.
Patent GB-889231-A (GB)
Title: Improvements in or relating to penicillins
IPC: C07D499/00
Filed: 1960-02-03
Abstract: Penicillins of the general formula <FORM:0889231/IV (b)/1> wherein X or Y, but not both, is oxygen or sulphur, the other being a direct linkage between adjacent atoms, R1 and R2 are each a hydrogen or halogen atom or a hydroxyl, C1-C6 alkyl1 C1-C6 alkoxy, nitro, acyloxy, phenoxy or carbethoxy group, and M is hydrogen, a metal, ammonium or amine radical, are prepared by reacting 6-amino-penicillanic acid with a compound producing the group <FORM:0889231/IV (b)/2> such as the corresponding acid, acid halide or anhydride.  When the acid is used it is preferably reacted in the presence of a carbodiimide.  Penicillins which may be produced by the process of the invention include cis- and trans-styrylmercaptomethyl penicillin and corresponding penicillins derived from a -methyl-trans-styrylmercapto acetic acid, a -methoxy-trans-styrylmercapto acetic acid, a -hydroxy-trans-styrylmercapto acetic acid, 4-phenylmercapto-3-butenoic acid and 4-phenoxy-3-butenoic acid.
Patent GB-1171063-A (GB)
Title: Improvements in or relating to Stockings.
Inventor: AVOT JEAN-PIERRE
IPC: A41B11/04
Filed: 1968-01-24
Abstract: 1,171,063. Coated stockings. J.-P. AVOT. 24 Jan., 1968 [31 Jan., 1967], No. 3802/68. Heading B2K. [Also in Division A3] A support band for a stocking has the fabric of the stocking substantially embedded in elastic material which may be a natural or synthetic rubber, thiopolyisoprene, polychloroprene, polychlorobutadiene, polyethylene chlorosulphone, copolyisobutene, ethylene polytetrasulphide or a polysiloxane. The coating may be effected by depositing, dipping, calendering or gun-spraying particularly electrostatic gun-spraying. The coating material may be coloured with a dye.
Patent GB-666711-A (GB)
Title: Improvements in ophthalmic glasses
IPC: C03C3/089
Filed: 1949-02-11
Abstract: 666,711. Ophthalmic glasses. CORNING GLASS WORKS. Feb. 11, 1949, No. 3827/49. Class 56. A lithia-free ophthalmic glass contains 33-55 per cent SiO 2 , 1-7 per cent B 2 O 3 , 2-15 per cent ZrO 2 , 5-15 per cent Na 2 O or Na 2 O+K 2 O, 0-28 per cent BaO, 0-15 per cent PbO, 0-10 per cent TiO 2 , 0-8 per cent Al 2 O 3 , and 3-15 per cent CaO, or ZnO, or SrO, or CdO or 3-30 per cent of a mixture of two or more of such second group oxides the maximum of any one such oxide being 15 per cent, the glass containing at least two of the bivalent metal oxides, the total bivalent metal oxide being 15-50 per cent, and the balance of the composition consisting of other compatible oxides, the softening point being below 750 C., the refractive index 1.57-1.70, and the coefficient of expansion between 70x10<SP>-7</SP> and 97x10<SP>-7</SP> cm per cm per  C. between 0 and 300 C. Preferably the glasses comprise 35- 47 per cent SiO 2 , 2-5 per cent B 2 O 3 , 6-8 per cent ZrO 2 , 1-10 per cent TiO 2 , 15-25 per cent BaO, 4-8 per cent CaO, 3-12 per cent ZnO or PbO or both, and 5-12 per cent Na 2 O or Na 2 O+ K 2 O. The bivalent oxide combination which gives optimum chemical durability, high refractive index, high dispersive index, and relatively low liquids is 20 per cent BaO, 5 per cent CaO, and 7.5 per cent ZnO. The Al 2 O 3  preferably not over 5 per cent and preferably in lieu of SiO 2  increases the resistance to devitrification. The glass is sealed to crown glass lenses to form multifocal spectacle lenses. The composition, and optical and physical properties of several examples are given.
Patent GB-140559-A (GB)
Title: Improvements in or relating to adjusting devices for the chains of cycles, motor cycles, and the like
IPC: B62M9/16
Filed: 1919-02-17
Abstract: 140,559. Deakin, H. W. Feb. 17, 1919. Driving-chains, adjusting.-In an adjusting-device for the chains of cycles, motor-cycles. &c., wherein a screwed stem is furnished with an eye, loop, or the equivalent, the connexion between the eye or loop a and the stem c is effected by the provision of a divided, split, or two-limbed ear upon the eye, the limbs being adapted to be located or assembled one on either side of a reduced neck or shank portion c<1> of the stem. The parts may be secured together bv welding, or, alternatively or additionally, by bending or working the split or divided ear of the eye about the neck or shank. The neck is located a short distance from the end of the stem, so that shoulders are formed to prevent axial displacement of the eye when in position. Instead of being cylindrical, the neck may be formed by the provision of grooves on opposite sides of the stem.
Patent GB-548908-A (GB)
Title: Improvements in scrubbing gases and materials therefor
IPC: C10K1/18
Filed: 1941-03-21
Abstract: 548,908. Hydrocarbon oil compositions. KODAK, Ltd. March 21, 1941, No. 3901. Convention date, Feb. 21, 1940. [Class 91] [Also in Group XII] A mineral or other oil to which an alkyl aminophenol has been added is used for scrubbing coal gas and similar gases in the recovery of light oils for instance benzene, the formation of sludge being prevented or reduced. Preferably the para compounds are used and either the mono- or di-alkyl body is suitable, but the ortho compounds may be used although they are less effective. From .005 to 1 per cent. of the aminophenol compound is used and the oil is heated after use and returned to the scrubbing operation. Specification 535,148, [Group XII], is referred to.
Patent GB-537150-A (GB)
Title: Improvements relating to control of the motors of battery electric vehicles
IPC: B60L15/04
Filed: 1940-03-02
Abstract: 537,150. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., and CANSDALE J. H. March 2, 1940 No. 3944. [Class 38 (iii)] Traction motor 3 supplied from batteries 1, 2 grouped in parallel and then in series, and controlled by pedal operating contacts 21. 24. Depression of pedal from " off " effects in sequence closure of contacts 21 causing closure of battery paralleling contactors 5' and 5<2> ; opening of contacts 22 and closure of contact 23 causing closure of accelerating contactor 6<1>; and finally closure of contacts 24 causing closure of accelerating contactor 7<1>. Release of pedal to first position effects reclosure of contacts 22 causing closure of transition contactor 8' over interlock contacts 7a. Whereupon interlock contacts 8a and 5a cause sequential opening of contactors 5' and 5<2> and closure of series contactor 9<1>. Renewed depression of pedal causes contactor 6<1> to reclose, contactors 8<1> and 9<1> being maintained closed over interlock contacts 8b although contacts 22 are re-opened.
Patent GB-536509-A (GB)
Title: Lettering and marking of roads
IPC: C04B28/10
Filed: 1940-04-03
Abstract: 536,509. Ester paints. JONES, J. April 3, 1940, No. 5967. [Class 95] [Also in Group V] A composition of slaked lime and Portland cement is used for lettering or marking roads, curbs, poles, walls &c. It may be used as a wash or sunk into channels.
Patent GB-932872-A (GB)
Title: Vibration dampers
Inventor: CLARK JOHN WOOD
IPC: F16F7/10
Filed: 1962-02-01
Abstract: 932,872. Inertia vibration-dampers. ALUMINUM CO. OF AMERICA. Feb. 1, 1962, No. 3974/62. Class 108(3). A damper for preventing windinduced vibrations in suspended rods, cables &c., e.g. an overhead electrical transmission line 20, and of the kind comprising identical inertia members 24 which have their centres of gravity in the axis of a resilient energy absorbing member 14 the centre point of which is connected by a clamp 12 to the line 20 is characterized in that the centre of gravity C of each member 24 is located inwardly of its effective point of attachment A to the resilient member 14 by an amount in excess of 12% of the unrestrained length of resilient member 14 at the respective side of the clamp 12 between the points A, B. The inertia members 24, of substantially equal mass and weight in any one size of damper and each of tubular bell shape with stepped outer cylindrical surfaces 26, 28, 30, are connected to the resilient member 14 by split, tapered, collets 34 which are wedged to tightly clamp the ends of the resilient member 14 in corresponding tapered apertures 38 in the portions 26 of the inertia members 24. A drain hole 42 is provided in each inertia member. In a modification, Fig. 4, not shown, the inertia members are generally C-shaped. Specification 427,503 is referred to.
Patent GB-958592-A (GB)
Title: Improvements in belt-tensioning devices for belt conveyors
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G23/44
Filed: 1961-02-02
Abstract: 958,592. Tensioning endless belt conveyers. MINING ENGINEERING CO. Ltd. Jan. 16, 1962 [Feb. 2, 1961], No. 3980/61. Heading B8A. A belt-tensioning drum 18 is carried on rollers 24 that ride on the sides of a carriage 20 and is constrained to move with its axis at right angles to the line of motion by means of two parallel chains 25 which engage sprockets 27 keyed to a shaft 29 and independently mounted sprockets 28. The chains are attached by eye bolts 32 to a frame 26 carried by the shaft 23 of the drum, the bolts being adjusted to tension the chains and square up the drum initially. A part of the frame 26 which extends outside the loop of the conveyer belting forms a yoke provided with a pulley 33 for engagement by a rope 34 connected to a load-sensitive winch 35 or a gravity tower. In use, the belt acquires a permanent stretch and also stretches elastically in response to changes in the load it carries. Elastic stretch is accommodated by movement of the drum to and fro along the carriage which normally remains undisturbed. But the gradual increase in permanent stretch causes the drum to shift its mean position towards the ganged sprockets 27 until a stop 36 on the frame 36 engages a cross member 37 of the carriage. The drum then shifts the carriage 20, which is slidable in a main framework 11, to a new position in the framework, where it remains until another increment of permanent stretch causes the drum to reposition the carriage. The independently mounted sprockets 28 may be replaced by pulleys and the lengths of chain which run over the independently mounted sprockets may be replaced by wire cables. In a modification, Fig. 6, the chains are attached at one end to the drum shaft or its mountings and at the other end to a yoke 39. The centre of the yoke is connected to the load sensitive winch, gravity tower or the like by a rope 40 which is doubled around a pulley 41 on the carriage.
Patent GB-1441338-A (GB)
Title: Device for controlling liquefied gas
IPC: G05D16/06
Filed: 1974-01-29
Abstract: 1441338 Valves NISSAN MOTOR CO Ltd 29 Jan 1974 04018/74 Heading F2V In a regulating valve device for the supply of liquefied gas, e.g. propane to an I.C. engine comprising two connected chambers 2, 7 each with an inlet valve 6, 11 controlled by a respective lever 5, 10 attached to a diaphragm as 4 (other not shown), the lever 5 is provided with a movable abutment 22 which makes a loose connection with the lever 5 and is attached to a diaphragm 20 responsive to inlet pressure such that inlet pressure acting on the valve 6 tending to open the valve is counter-balanced by the inlet pressure acting on the diaphragm 20. The other side of diaphragm 4, i.e. chamber 12, may be connected to air pressure or the chamber 7. The forces which effect the opening of the valve 6 are thus those arising from the pressures in chambers 2 and 12 acting on the diaphragm and the adjustable force of the spring 14 but not the inlet pressure of the fluid.
Patent GB-524788-A (GB)
Title: Improvements in or relating to the deliming of limed pelts
IPC: C14C1/08
Filed: 1939-02-07
Abstract: 524,788. Deliming pelts. I. G. FARBENINDUSTRIE AKT.-GES. Feb. 7, 1939, No. 4073. Convention date, Feb. 7, 1938. [Class 767 A process for deliming limed pelts preliminary to tanning consists in treating them with a solution of water-soluble salts of carboxylic acids containing nitrogen and at least two organic radicals substituted by carboxyl groups in the alpha-positive to a nitrogen atom. Thus, cow pelts are limed and rinsed as usual. The pelts are then delimed by treatment with a 3 per cent. bath of the trisodium salt of nitriletriacetic acid. Other suitable salts mentioned are the tetrasodium salt of ethylene-bis-iminodiacetic acid and the trisodium salt of 1-aminobenzene-N, N-diacetic acid and ortho-carboxylic acid. Other deliming compounds may be present.
Patent GB-952315-A (GB)
Title: Improvements in or relating to pressure instrumentation devices
IPC: G01P5/165
Filed: 1963-01-31
Abstract: 952,315. Pitot tubes. ROSE MOUNT ENGINEERING A. G. Jan. 31,1963 [May 7, 1962], No. 4073/63. Heading G1R. A pressure instrument comprises an elongated tube 10 with a pitot port 12 at its front end, a forward space 15 in the tube sealed off by a plug 16 above the floor of which opens at 17B a port of a pitot pressure line 17 and a water-delivery channel (24A-26 of Figs 2 and 3) which extends from a mouth adjacent the floor of the space near the plug to a water delivery port 27 opening out of the exterior surface of the tube 10. Alternatively water accumulating in the space 15 may be removed by a tube 43 passing round the side of the tube 17 and opening at 42 in the top of the tube 10. In either instance the water is driven to the outlet port by the pressure in the space 15. Two static-pressure ports open downwards at from 36 to 40 degrees on either side of the vertical from the space behind the plug 16. The space 15 and the rear space near the static ports are provided with electric heaters 32. Specification 946,898 is referred to.
Patent GB-206069-A (GB)
Title: Improvements in and relating to identifying rings for pigeons
IPC: A01K35/00
Filed: 1923-02-12
Abstract: 206,069. Martens, H. Feb. 12, 1923. Seals.-A leg band for pigeons &c. designed to prevent fraudulent removal or alteration consists of a metal ring 1 enclosing a ring 2 of mica, glass, celluloid or other brittle and transparent material, the edges of the ring 1 being turned over the ring 2. If the band is tampered with the resulting fractures in the ring 2 or cuts in the turned-over edge of the ring 1 can be seen through apertures 3.
Patent GB-999801-A (GB)
Title: Process of producing reproductions
IPC: G03C8/06
Filed: 1962-02-02
Abstract: 999, 801. Thermographic materials. AGFA A.G. Feb. 2, 1962 [Feb. 7, 1961; April 8, 1961], No. 4120/62. Heading G2C. Reproductions are produced by exposing to infrared radiation a heat-softenable thermoplastic reception foil through an original, the reception foil or the original being coated with, or the original containing an organic material which is taken up by the foil which is softened at the image areas and the foil, if necessary, is then developed. The organic material may be a dye, a compound which contains both a hydrophobic and a hydro-philic group such as tannin, dinaphthyl methane sulphonate, alkyl sulphonates and fatty acids and alcohols or a wax. In the examples, a polyethylene or polyethylene terephthalate foil is coated with a dye, contacted with an original, heated so that the dye penetrates the foil and the unfused dye wiped off. Alternatively stearyl alcohol may be coated in a polyvinychloride foil which after imagewise exposure is developed with an alcohol-soluble dye which adheres to the non-fused areas. A polyamide foil coated with dinaphthyl methane sulphonate is imagewise exposed and developed with electrostatically charged powder such as sulphur or carbon black which adheres to the fused areas. As an original containing organic material, a silver halide emulsion containing dodecyl alcohol may be exposed and developed may be used. This is contacted with a cellulose acetate foil and imagewise exposed to heat so that the transferred dodecyl alcohol is taken up by the softened foil and developed with a dye. Alternatively as an original containing an organic material is a positive transfer image producing by the silver salt diffusion transfer process, the image layer containing a dye. Specification 777,819 is referred to.
Patent GB-383607-A (GB)
Title: Springs suspensions, more particularly for use with motor vehicles
IPC: B60G11/02
Filed: 1931-02-10
Abstract: 383,607. Vehicle suspension systems ; laminated springs. KAPPER, H., 8, Seestrasse, Sudende, Berlin. Feb. 10, 1931, No. 4155. Convention date, Feb. 10, 1930. Void [Published under Sect. 91 of the Acts]. [Classes 108 (ii) and 108 (iii).] A vehicle laminated suspension spring includes two or more main leaves clamped together at their ends in stirrups e and supported intermediate thereof by laminations arranged as indicated, e.g. in Figs. 2, 5, and 8. In one form the spring is used for mounting a car axle g, Fig. 5, a link h being provided between the axle and the frame f. The stirrups e may be connected by cross-bars so as to impart lateral rigidity to the system and in this case the parts a, d and b, c of the spring may be displaced laterally, their ends being connected to the cross-bars. The links h may be replaced by springs. In a modification, a spring of the type indicated in Fig. 2 is employed and the rod h is replaced by a spring k, Fig. 8. The spring leaves may be initially straight.
Patent GB-451851-A (GB)
Title: Improvements in efficiency and fault indicators for electric lighting systems
IPC: H05B39/10
Filed: 1935-02-09
Abstract: 451,851. Indicating faults. AMES, W. A. B., 9, Woodend Road, Newlands, and CRAWFORD, J., 99, Harefield Drive, Scotstoun, both in Glasgow, and UNITED ELECTRICAL CO. (COOLEX), Ltd., PENDERGAST, F. R., and SHEERMAN, S. E., Chester Street, Birmingham. Feb. 9, 1935, No. 4200. [Class 37] [See also Groups XXXVII and XXXVIII] A fault indicator for an electric lighting system comprises a visual indicator, preferably a lamp, carrying the lighting current, the intensity of illumination of the lamp varying with a fault on the lighting circuit and the indicator lamp being connected together with the supply circuit by means of a mercury switch operated by an impulsed solenoid. If the indicator lamp filament fails the lighting current passes through a short-circuit connection in the lamp envelope. An emergency switch is incorporated in case the mercury switch fails. The core 35, Fig. 2, of solenoid 21 energized by a hand switch 16 carries a lever 36 which actuates a star-wheel 34 connected with a further wheel 31 permitting the mercury switch 4 to turn into an inclined position and connect line 5 to the indicator lamp 11. The number of points on the wheel 34 is twice that on the wheel 31 so that on release of switch 16 the mercury switch 4 takes up an horizontal position and further manual operation of switch 16 cuts off the lighting circuit. The emergency switch 38<1> shortcircuits the mercury switch should a fault occur therein.
Patent GB-114457-A (GB)
Title: Improved Means for Securing Fuses to Shells or Projectiles.
Inventor: HAILWOOD ERNEST ARTHUR
IPC: F42C19/02
Filed: 1917-03-26
Abstract: 114,457. Hailwood, E. A. March 26, 1917. Projectile fuses. - Consists in securing the fuse to the shell by means of a thin metal washer or ring, interposed between the fuse and the shell and having lips or punch marks on it engaging recesses or projections on the fuse body and on the shell. Several forms of the device are shown. In the example shown in Fig. 1, lips B on a tin or other metal ring A engage in recesses C, the lower lip being driven into the recess in the shell body after the fuse has been screwed into position. The ring may be split, and it may be U-shaped in cross-section.