baber/WOPTO huggingface dataset:
Patent GB-463261-A (GB)
Title: Improvements in or relating to the flotation of minerals
IPC: B03D1/004
Filed: 1935-09-25
Abstract: Ores, &c. are concentrated by subjecting them to froth flotation in the presence of one or more quaternary ammonium or phosphonium salts or ternary sulphonium salts, (other than quaternary ammonium sulphates) in which at least one radical attached to the nitrogen, phosphorus, or sulphur atom is a hydrocarbon radical containing at least 8 carbon atoms, preferably an aliphatic hydrocarbon radical having from 12 to 18 carbon atoms, or carries a group having such a radical as substituent. Either sulphide minerals or non-sulphide minerals such as feldspars, quartz, ilmenite, chromite, the pyroxenes, spinels such as picotite and magnetite, micas such as bistite and musocovite, hematite, limonite, and isidenite, may be concentrated.  When treating sulphide ores the reagent is preferably used in conjunction with another flotation reagent such as a xanthate, mercaptan, thiourea, or carbamate.  For treating non-sulphide ores it may be used alone or in conjunction with soaps, sulphuric esters of higher alcohols, sulphonated derivatives of higher fatty acids or alcohols &c.  Specific reagents referred to are cetyl trimethyl ammonium bromide and chloride, lauryl trimethyl ammonium chloride and iodide, cetyl pyridinium bromide, trimethyl octadecyl ammonium bromide and chloride, trimethyl eicosyl ammonium iodide, octadecyl pyridinium bromide and chloride, cetyl or octadecyl beta hydroxyethyl morpholinium bromide, triethyl cetyl or octadecyl ammonium bromide, octadecyl alpha picolinium bromide, octadecyl quinolinium bromide, and dodecyl pyridinium bromide.  The Provisional Specification also refers to beta diethyl amino ethyl oleyl amide acetate and hydrochloride and to trimethyl ammonium methyl sulphate of mono-oleyl ethylene diamine. Specification 410,956 is referred to.
Patent GB-358221-A (GB)
IPC: H02P1/54
Filed: 1930-09-05
Abstract: 358,221. Control of two A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Cutler, C. W. ; 331, East Indiana Street, Wheaton, and Sykes, S. B. ; 346, Wisconsin Avenue, Oak Park, both in Illinois, U.S.A.) Sept. 5, 1930, No. 26590. Convention date, Sept. 6, 1929. [Class 38 (iii).] Travelling to predetermined limits; non-regenerative braking.-For driving a machine tool or the like separate motors 10, 11 are used, for the working and idle strokes, the motor 10, in addition to moving the tool during the idle stroke, being used for " plugging " the set to rest at each limit. With a switch 25 in the position shown, the tool is " inched " by means of one or the other of pushbutton switches 23, 24. For full automatic operation the switch 25 is moved to the left, and with a limit switch 26 in the position shown, a contactor 17 is closed to connect the motor 10 to the supply for the idle stroke. At the end of this stroke the limit switch is moved to its other position, de-energizing contactor 17 and closing a contactor 16 so that the motor 10 is " plugged " to rest. Immediately this motor begins to rotate in the working stroke direction a friction switch 40 is closed and a contactor 18 energized. This contactor 18 connects the motor 11 for the working stroke and in the act of closing de-energizes the contactor 16. At the end of the working stroke the limit switch is returned to its original position, the contactor 18 being de-energized, and the cycle then repeated. A mechanical brake 20 is lifted when a contactor 22 is closed, the contactor 22 being energized when any one of the contactors 16, 17, 18 is closed. During the automatic working the contactor 22 is maintained closed over its auxiliary contacts 22a.
Patent GB-228235-A (GB)
Title: Improvements relating to the cooling of hot surfaces
IPC: F01P11/06
Filed: 1923-10-25
Abstract: 228,235. Fothergill, H. Oct. 25, 1923. Refrigerating, vacuum machines and processes for.-Circulating water or other liquid used for cooling internal-combustion engines &c. is cooled and de-aÙrated by delivering it to a tank e through a pipe d, from which it is fed by a pump A into a chamber f through a float valve s. The chamber f is connected to a water cooled condenser g by a pipe y and the condensed liquid returns to the chamber f by a pipe l. The condenser is divided by a partition t, and a steam or water actuated ejector maintains a slight vacuum in the upper part of the condenser and discharges into the lower part which has a sealed return pipe y, a vent pipe p allowing the non- condensible gases to escape to the atmosphere. The cooled water is returned to the circulating system by a pump B. If a water ejector be used it may be supplied from the tank e by an additional pump and may discharge back to the tank
Patent GB-1353759-A (GB)
Title: Controlling of asynchronous motors
Filed: 1971-04-19
Abstract: 1353759 Control of AC motors; automatic speed control CSEPELI SZERSZAMGEPGYAR 19 April 1971 [13 April 1970] 26803/71 Heading H2J [Also in Division G3] The invention relates to the control of an asynchronous A.C. motor 2 fed from a D.C. source 1. The motor has for each pole two conductors wound in antiphase and connected at a common point to one side of the D.C. supply. The other ends of the windings are connected in turn to the other side of the D.C. supply by pulse inverters 7, 8 controlled in accordance with an input signal at 26 and a current feedback by half-sine-wave pulses from a generator 22. As shown the input voltage at 26 controls the frequency of a generator 25 feeding a shift register 24 which through a decoder 23 causes the generator 22 to deliver half-sinewave signals at t, s, r separated 120 degrees in phase and further signals at 18, 27, 28 to cause the switching devices 7, 8 to be operated alternately in the correct sequence. The amplitude of the signals at t, s, r depends on the signal at 26 by means of a D/A converter 20 fed by the pulse generator 25. The individual signals at t, s, r are fed to devices 16 which also receive the current feedback signal from an integrator 12 fed from a resistor 11 in series with the windings. The output of device 16 is differentiated at 13 and applied to gated amplifiers 14, 15. These are alternately gated on by a trigger circuit 10 fed by the signal at 18 to supply gating pulses, of frequency dependent upon the signal at 26 and amplitude dependent on the signal at 26 and the feedback signal from 12, to the inverters 7, 8. Switching means may be provided (Fig. 2, not shown) to interchange the connections from t, s to 18, 27 to reverse the motor. For automatic speed control the signal at 26 is derived from a pulse generator 3 or a tachogenerator coupled to the motor. The output of this generator is applied through a buffer 50, shaper 49 to charge a capacitor 57 and through shaper 47 and inverter 53 to discharge a capacitor 56. Similarly a set speed pulse signal from a generator 43 charges capacitor 56 and discharges 57. The values in capacitors 56, 57 are applied by impedance transformers 58, 59 to a summing circuit 40 to produce the signal at 26. In a modification (Fig. 4, not shown) the trigger circuits 10 and connections 18, 27, 28 are omitted and the generator 22 directly produces six gating signals to the various amplifiers 14, 15.
Patent GB-209181-A (GB)
Title: Improvements in electric welding apparatus
IPC: B23K9/133
Filed: 1922-10-04
Abstract: 209,181. Cutler. A. E., and Marsden, P. A. Oct. 4, 1922. Systems depending on the use of two or more motors.-In an arc welding apparatus the electrode 38 passes between a pair of feed rollers 36, 37 driven by a pair of electric motors 14, 15 through differential gearing. The armature 58 of the motor 15 and the field 59 of the motor 14 are connected in parallel across the arc, and the armature 60 of the motor 14 and the field 61 of the motor 15 are also connected in parallel and are subjected to a voltage which varies inversely with variations in the welding current. A variable resistance 55 is connected in series with the arc. When the electrode is placed in contact with the work 69 and the switches 54, 62 are closed the relay 57 closes the switch 72. The motor 14 now operates to retract the electrode and the relay 56 closes the switch 90. As the arc lengthens, the motor 15 commences, to operate and a condition is arrived at whereby the arc length is maintained constant. The differential gear, Figs. 1 and 3, comprises bevel wheels 25, 26 fixed to worm-wheels 24, 23 driven by the motors and loosely mounted on a shaft 27 carrying the roller 36 and operating the roller 37 through gearing 31, 32. A sleeve, pinned to to the shaft 27 has opposed radial arms on which are loosely mounted bevel wheels 29 which engage the wheels 25, 26. The roller 37 and wheel 32 are mounted in a bearing 33<1> pivoted about a shaft 35. The grip of the feed rollers may be varied by adjusting the pressure of the spring 42 on the bearing 33<1>, through the medium of a lever 39 pivoted at 40 and operated by a nut 41. The electrode is fed through a flexible tube 44 fitted with a hand tool 46. In a modification, the differential gear is enclosed in a box having an insulated handle and a supporting foot for resting it on the work. In this modification, the worms 21, 22 are driven by the motors through flexible shafts.
Patent GB-1096826-A (GB)
Title: Piston, e.g. for an internal combustion engine or compressor
Inventor: HARRISON ALAN EDWARD
IPC: F02F3/22
Filed: 1964-06-29
Abstract: 1,096,826. Cooling pistons. SPECIALLOID Ltd. May 17, 1965 [June 29, 1964], No. 26875/64. Heading F2T. A piston 4 is cooled by oil or other liquid which passes outwardly over inclined surfaces 8 on each side of an inverted ridge 9 on the underside of the crown approximately in the vertical plane containing the gudgeon-pin axis and is circulated through an annular chamber 1 in the piston head. The chamber 1 is formed by a cast in hollow sheet metal ring 2 having inlet and outlet ports 5, 6 at the ends of the tubes 3 extending above the bottom of the chamber so that a certain amount of oil is always retained in the chamber. Alternatively, the ports may be formed by punching-out a lip so that it projects above the floor of the ring 2. In use, oil supplied under pressure from a jet 11 the the connecting rod 10 passes over the surfaces 8 and is carried by inertia into either the port 5 or 6, the excess oil in the chamber escaping through the other port 6 or 5. In a modification, Fig. 8 (not shown), the inlet and outlet ports (23) open radially into the piston interior and are formed in the upper part of the inner radial wall of the chamber (21).
Patent GB-360112-A (GB)
Title: An envelope, wrapper, or the like for authenticating the postmarks on contents
IPC: B65D27/00
Filed: 1930-09-09
Abstract: 360,112. Carbon papers &c. NICOHOSOFF, 5, Rue Fouad ler, Alexandria, Egypt. Sept. 9, 1930, No. 26972. Drawings to Specification. [Class 100 (iv).] An envelope, wrapper, &c. is coated with a carbon composition on its inside faces such that postmarks stamped thereon on either face will be reproduced on the contents. The composition may consist of 45 per cent chloride of sulphur, 45 per cent cotton oil, and 10 per cent fine lampblack.
Patent GB-656872-A (GB)
Title: Improvements in or relating to mixing machines
IPC: B01F29/64
Filed: 1947-08-16
Abstract: 656,872. Mixing machines. AITKEN, I. M. E., COLQUHOUN, C. B. H., and WATSON, W. R. Aug. 16, 1947, No. 27087/46. [Class 86] A mixing machine, especially for mixing powders, comprises a drum rotated about a horizontal axis and an internal blade structure or rotor which is adapted to be rotated either with the drum or in the opposite direction, by means of variable gear transmission, means being provided for swinging the drum in a vertical plane for filling and emptying it. As shown, the drum A is fixed to a hollow shaft C rotatably mounted in a casing W carrying a frame structure supporting an electric motor F from which the shaft C is driven through a belt S and pulley E. The mixing rotor H comprises helical blades mounted on a spindle I, one end of which passes through the hollow shaft C and has a spur wheel L which forms the central pinion of a sun-and-planet gear. The planet pinions M are mounted in a flanged, rotatable disc O and mesh with teeth cut in a cylindrical flange of the pulley E. The disc O has a peripheral groove for a brake band P controlled by a bell crank lever Q.. Initially the drum A is rotated and carries the rotor H with it. When the brake band P is gradually tightened the rotor is first brought to rest and then rotates in the opposite direction. The drum A is rotatable in a vertical plane about trunnions R to facilitate its being filled or emptied.
Patent GB-1430023-A (GB)
Title: Process for the production of crystalline cryolite of high bulk density
IPC: C01F7/54
Filed: 1973-06-06
Abstract: 1430023 Cryolite KALI-CHEMIE AG and KALI-CHEMIE FLUOR GmbH 6 June 1973 [6 June 1972 9 Sept 1972] 27100/73 Heading C1A Synthetic cryolite is made either batchwise or continuously by adding to aqueous 10-60% HF, a supersaturated aqueous solution of aluminium trifluoride simultaneously with an aqueous solution of sodium chloride and/or sodium sulphate, at rates so as to maintain an Al : Na ratio of 1 : at least 3, the reaction being performed under intense stirring at temperatures of 10‹ to 80‹ C., the cryolite precipitated being separated and dried. Preferably the sodium chloride and/or sulphate, is introduced so as to be in excess to the extent of 5-50%. When operated continuously two or more reactors in series may be used, an excess of H.F. being maintained in at least the first reactor.
Patent GB-954924-A (GB)
Title: Photographic gelatine layers containing diffusion-resistant organic compounds
IPC: G03C7/327
Filed: 1961-07-26
Abstract: The Specification describes copolymers of N-vinyl pyrrolidone and maleic anhydride. The monomers may be copolymerized in an inert solvent such as dioxane using peroxides or azodi-isobutyric acid dinitrile as catalysts. The copolymers may be further reacted with organic amines to form amide links, or the maleic acid chloride or anhydride may first be reacted with the amine and then copolymerized with N-vinyl-pyrrolidone. In the examples, the following amines are used: p-amino-azobenzene, 4-amino-21, 3- dimethyl-azobenzene, 1-amino -4(21-ethoxyphenyl)azo-naphthalene 2-amino chrysene, 2-aminohydrocinone, 3- or 4-aminobenzoyl aceto-anisidide, benzoylacet -4- or 5-amino -2- methoxy anilide, 1-(31-or 41-aminophenyl) -3- methyl -5- pyrazolone, 1-(31-aminophenyl)-3, 4-dimethyl -5- pyrazolone, 1-phenyl -3- amino -5- pyrazolone, 6-amino-indazolone, 1-napthol-(N-31-aminobenzoyl -N- 311, 511-dicarboxyphenyl) -2- carbamide, 3-aminophenol or 6-chloro -3- aminophenol. Specifications 479,338, 767,028, 8-8,629, 861,138 and 894,589 are referred to.
Patent GB-426715-A (GB)
Title: Improvements in or relating to cam driving gear
IPC: F16H25/12
Filed: 1933-10-03
Abstract: 426,715. Cams. HASSALL, T. G., 9, Albert Square, Manchester. Oct. 3, 1933, No. 27139. [Class 80 (iii)] In cam driving-gear for converting reciprocating motion to rotary motion or vice versa, the rotor is formed with a continuous cam groove or projection which is formed in cross-section with one or both walls made up of two or more straight or curved faces or straight and curved faces inclined to each other to engage a member or members on the reciprocating element correspondingly shaped in cross-section. As applied to a reciprocating piston engine as described in Specification 324,743, [Class 7 (ii)], the rotor 7, Fig. 2, is provided with a cam groove 8 engaged by a roller 10 carried by a slipper block 4 secured on the reciprocating element 5 ; steel blocks 21 let into the rotor have faces a, b of different inclinations which are engaged by corresponding faces a<1>, b<1> on the slipper block 4. Such blocks may be arranged on one side only or on both sides of the cam groove 8, and may be continuous or interrupted as in Fig. 6. The cam faces may be formed wholly in the metal of the rotor itself as in Fig. 9 wherein the cam groove comprises a curved surface 11 and relatively inclined straight faces 11<a>, 11<b>, 11<c>, 11<d>, engaging corresponding faces on the slipper block 4, the roller 10 being dispensed with. Various arrangements of inclined and curved surfaces are described and shown.
Patent GB-305970-A (GB)
Title: Improvements in or relating to portable power actuated air compressors or pumps
IPC: F04B27/02
Filed: 1927-10-13
Abstract: 305,970. Turner, W. Oct. 13, 1927. Gravity-feed lubricating.-Oil wells 49 at the ends of a compressor crank-case are supplied from a reservoir 38, Fig. 4, having an eccentrically operated needle valve 44.
Patent GB-463945-A (GB)
Title: Improvements in or relating to collars and their attachment to shirts
IPC: A41B3/02
Filed: 1935-10-03
Abstract: 463,945. Attachment of collars to shirts. BRYDGES, S. M. Oct. 3, 1935, Nos. 27248/35 and 10301/36. [Class 141] A method of attachment of a collar to a shirt comprises inserting a slotted tab 9 at one end of the collar into a slot or loop 10 at the other end thereof, and inserting a buttoned tab 12 secured to the shirt into the slot 17 in the tab 9. The back of the collar is provided with a pair of spaced tabs 2, 3, adapted to be inserted into complementary spaced slots or loops 5, 6, on the shirt neckband. The shirt and collar are provided with the usual studholes, so that studs may be used when desired. Specification 439,464 is referred to.
Patent GB-629202-A (GB)
Title: Apparatus for applying annular insulating discs to an electric conductor
IPC: H01B13/18
Filed: 1947-10-10
Abstract: 629,202. Cable -making machines. WESTERN ELECTRIC CO., Inc. Oct. 10, 1947, Nos. 27271, 27272 and 27273. Convention dates, Oct. 10, 1946. [Class 36] [Also in Groups II and XXX] Apparatus for applying slit insulating discs to a conductor includes a shoot which delivers the discs to a device for expanding the slits so that they may be placed on the conductor. The discs may be slit on their passage through the apparatus. Discs 10 are fed to shoots 14, 12 from a hopper 15. At the bottom of each shoot there is a plunger which feeds the discs into notches 16, 36 in applicator wheels 17, 37. The plunger 18, Fig. 6, is urged to the right by a spring 20, but is prevented by a cam 21 carried by the wheel 17 from moving to the right except when one of the notches 16 is in a position to receive a disc. A similar plunger operates in conjunction with wheel 37. The discs are held in the notches 16; 36 and passed over knives 30, 50, where they are radially slit and passed on to guide members 31, 51. The ends 34, 54 of guides 31, 51 gradually thicken, thus opening the slits so that the discs can be fed to the conductor 11 with a wiping motion and without damaging the sides of the slits. The discs are fed to the shoots 12, 14 from a hopper 15, Fig. 2, by means of an oscillating vane 70. When the vane 70 is in the lower position the discs fall into parallel grooves 80 (not shown) and 81 along the top of the vane. As the vane moves to its upper position the discs slide along arcuate passages 90 (not shown), and 91 into arcuate grooves 100 (not shown), and 101 whence they are guided by members 130 (not shown), and 131 into the shoots 12, 14. Specification 625,534 is referred to.
Patent GB-793298-A (GB)
Title: Improvements in electrostatic spray coating apparatus
IPC: B05B5/03
Filed: 1956-09-06
Abstract: <PICT:0793298/III/1> <PICT:0793298/III/2> <PICT:0793298/III/3> <PICT:0793298/III/4> Electrostatic spray coating apparatus includes a pneumatic spray gun 12 having an end cap 54 of electrically non-conducting material through which the spray issues, a discharge electrode 16 and a current collecting electrode 14 between which the spray stream passes.  The spray is thereby electrically charged and the insulated cap 54 reduces the danger of sparking.  Electrode 16 consists of a number of pointed rods 80 in fan-shaped array secured to a head 86 at the end of a supporting rod 88, and the electrode 14 comprises a flat plate with curved edges.  The gun and electrodes are supported on a mounting 10 adjustably arranged on a stand 30 by a bolt 28.  A rod interconnects the inner ends of the electrode rods 80 and is attached to a socket 84 which receives a plug 94; the latter is connected to a high-voltage lead 91 extending through the rod 88 which is detachably attached to the mounting 10 by a spring clip. The gun, Fig. 5, has a spring control needle 130 and a tip 56, through which the spray liquid flows, both formed of nylon; air flows through the cap 54 and passages 59 to confine the spray into a narrow band.  A conductor 106, Fig. 7, connects the mounting 10, gun and electrode 14 to the positive terminal, maintained at or near zero potential, of a power supply unit 92.  The cable 91 is connected to the high negative potential terminal of the unit.  A low-voltage supply feeds the unit via normally open contacts 112, 114 which are closed by a coil 115 when spraying is commenced, and the normally open contacts 120 of an airflow-operated switch 122 are closed.  A source of high-pressure air 126 feeds the gun through the switch 122 which, when operated, retracts the gun needle 130 and admits spray material to the gun from a reservoir 132 maintained under slight pressure.  An atomizing air source 136 is also connected to the gun. Workpieces 142 to be coated are carried past the gun on an electrically earthed conveyer 144.
Patent GB-954312-A (GB)
Title: Improvements in or relating to gyroscopic compasses
IPC: G01C19/38
Filed: 1961-07-28
Abstract: 954,312. Gyroscopic compasses. S.G. BROWN Ltd., D.BARNETT, and D.L. BROOK. June 7, 1962 [July 28, 1961], No. 27414/61. Drawings to Specification. Heading G1C. Any deviation of a gyroscopic compass from its settled position, whether caused by, external or internal disturbances, is normally accompanied by a change in its tilt angle so by comparing this angle with a pendulum or other gravity-sensing device, a signal is obtained which is termed a pendulum signal and by passing it through a low-pass filter, to suppress or eliminate any periodic signal superimposed thereon by virtue of the rolling or pitching motion of the vessel carrying the compass, the steady state pendulum signal may be caused to actuate an alarm or other indicator when the deviation exceeds a predetermined value. The alarm may be operated through a thermal relay which provides a time delay of about 3 minutes. The pendulum signal may be amplified in a non- linear amplifier operated near its saturation level to assist in eliminating the effects of any periodic signal superimposed on the steady state signal.
Patent GB-362992-A (GB)
Title: Improvements in or relating to hinged mirror mountings
IPC: A47G1/04
Filed: 1930-09-13
Abstract: 362,992. Mirrors. YAGER, H. and YAGER (LONDON ), Ltd., H., Charlotte Cabinet Works, Ponders End, Enfield, Middlesex. Sept. 13, 1930, No. 27433. [Class 52 (iv).] A hinge for connecting a pair of adjacent mirrors 4, 10, has a rearward extension 5 on one plate for attachment to the supporting post 8. One of the mirrors may have a detachable connection 7, 12 to its hinge plate.