baber/WOPTO huggingface dataset:
Patent GB-637128-A (GB)
Title: Improvements relating to the dynamic braking of induction motors
IPC: H02P3/24
Filed: 1947-09-19
Abstract: 637,128. Control of A.C. motors. EVANS, O. T., GHALIB, S. A., and METROPOLITAN: VICKERS ELECTRICAL CO., Ltd. Sept. 19, 1947, No. 25620. [Class 38 (iii)] In a dynamic braking system for induction motors constant braking torque is obtained by automatic adjustment of a liquid load resistor according to the motor speed, the adjustment being responsive to two signals, one proportional to motor speed and the other proportional to the value of the load resistor. An induction motor M has a liquid controller LC in its rotor circuit which acts as a variable load resistor during dynamic braking when the A.C. excitation is substituted by D.C. excitation. A voltage proportional to the motor speed is developed by the tachometer generator TG which signal is balanced against a voltage developed across the controller in the polarity or phase discriminating amplifier DA, the resultant being applied to a power amplifier PA, the output from which operates. a servomotor SM to adjust the controller to maintain equality between the two signals. Since the resistance of a liquid controller for a given setting may vary due to temperature conditions or the concentration of the electrolyte, the signal which is proportional to the value of the controller resistance may be obtained from a fixed tapping T on a rheostat R arranged across one phase of the controller, compensation for current variations being made by means of a D.C. torque motor TM which adjusts the position of the slider S on the rheostat. To compensate for variations in the controller resistance from phase to phase the rheostat may be fed from all three phases through rectifiers and the torque motor may have three coils each fed from a different phase. In an alternative arrangement an induction type tachometer generator may be used in lieu of the D.C. type, in which case an inverter is used to invert the D.C. signal which is proportional to the controller resistance. The braking torque may be adjusted by variation of the D.C. excitation or by variation of the signal which is proportional to speed, i.e. the value of the ratio resistance/ speed. Specifications 632,831, 634,815 and 637,129 are referred to.
Patent GB-1313024-A (GB)
Title: Lacquer bidners
IPC: C08C19/28
Filed: 1971-04-19
Abstract: 1313024 Electro-phoretic deposition of polymers BAYER AG 19 April 1971 [4 April 1970] 25638/71 Heading C7B [Also in Division C3] In examples, phosphatized steel sheet is coated by making it the anode in an electrodeposition bath containing an aqueous lacquer comprising ethylene glycol monobutyl ether, carbon black, aluminium silicate pigment, and a polymeric binder obtained by reacting polybutadiene oil with soya oil and then reacting the product with maleic anhydride followed by hydrolysis and neutralisation with triethylamine. In example 2, the polymer is also further reacted with styrene prior to hydrolysis and neutralisation.
Patent GB-1100929-A (GB)
Title: Improvements in or relating to the heat treatment of metal articles
IPC: C21D9/50
Filed: 1966-06-09
Abstract: That area of a metal workpiece or structure which is to be heated is coated with a radiationabsorbent material containing ferric oxide, and is then heated by radiation from an emitter coated with a material having the same radiation absorption characteristics as those of the workpiece coating.  The latter may be applied as a dispension of one part by weight of ferric oxide in two to three parts of water glass.
Patent GB-300748-A (GB)
Title: Improvements in or relating to shelving
IPC: A47B47/04
Filed: 1927-09-30
Abstract: 300,748. Ruck, J. C. Sept. 30, 1927. Fittings for securing books in position on shelves.-Uprights are secured to shelves by U- shaped clamps housed in recesses in the uprights and retracted thereinto by draw bolts with thumb nuts so that the shelf is gripped between the end face of the upright and the outer limb of the clamp. Shelves can be mounted side by side or in superposed relation by the use of uprights with single or double clamps, the outer limb of the clamp being in some cases, extended laterally. The uprights can be used on bookshelves as book-supports.
Patent GB-276854-A (GB)
Title: Improvements relating to brakes for cranes and like services
IPC: B66D5/00
Filed: 1926-10-16
Abstract: 276,854. Kenworthy, J. Oct. 16, 1926. Self-sustaining gear.-Relates to gear comprising an internally-threaded boss d connected to a pinion a which is free to turn through a, small distance on the shaft e, the endwise movement of the boss d applying brake pads h, j to the brake wheel i. The boss d is connected with the brake member by a spring plate or resilient web f which transmits torque but allows endwise movement so as to prevent vibration and noise. The second brake member k may be connected with a similar web f in addition to or in place of the arrangement shown.
Patent GB-896153-A (GB)
Title: Improvements relating to the protection of metals
Inventor: JAMES JOHN AYLWARD
IPC: C23C10/22
Filed: 1958-08-12
Abstract: A method of producing on ferrous metal containing a total of not more than 2% of Ni, Mn, Cn, Cr, Si, V, W, Al, Ti, and metals having a high affinity for nitrogen a coating resistant to corrosion by liquid Bi or Hg comprises nitriding or carburising the surface, then contacting the surface with liquid Bi or Hg, to which has been added Zr or Ti, at a temperature above 450 DEG C. to produce on the surface a coating of Zr or Ti nitride or carbide. A coating of Ti carbide or nitride will also give protection against corrosion by Pb.  Mg may also be added to the liquid Bi, Hg or Pb to act as a deoxidant.  The ferrous metal may be a steel containing 1% Cr and 0,5% Mo.
Patent GB-1429356-A (GB)
Title: Antiobiotics
IPC: C12P19/50
Filed: 1973-05-31
Abstract: 1429356 Xylostasin TAKEDA YAKUHIN KOGYO KK 31 May 1973 [31 May 1972] 25912/73 Heading C2C An antibiotic, O-#-D-xylofuranosyl-(1-# 5) - O - [α - 2,6 - diamino - 2,6 - dideoxy - D- glucopyranosyl - (1-#4)] - 2 - deoxystreptamine (also known as xylostasin), of formula or a pharmaceutically acceptable salt thereof, is prepared by cultivating (a) Bacillus sp. Y399 (B. vitellinus), ATCC 21932, or a xylostasinproducing mutant thereof or (b) Bacillus sp. V-7 (B. circulans), ATCC 21933, or a xylostasinproducing mutant thereof, in a culture medium containing assimilable carbon sources, digestible nitrogen sources and other nutrients until the antibiotic is accumulated. The antibiotic may be recovered from the clarified broth by adsorption on a cation exchange resin and elution with aqueous ammonia, followed by adsorption on on activated carbon, elution with dilute hydrochloric acid and neutralization with an anionic exchange resin to produce a crude powder. The latter is dissolved in water and further purified by adsorption on cation exchange resin and eluted with aqueous ammonia. The filtrate, after concentration, is treated with acetone, the precipitate recovered, dissolved in water and further adsorbed and eluted. The fractions were pooled and concentrated to dryness to yield white xylostasin powder. Xylostasin is basic and forms salts with acids, for example, sulphuric and hydrochloric acids. Pharmaceutical compositions having antibiotic activity against bacteria comprise xylo stasin or its pharmaceutically acceptable acid salts together with a suitable excipient.
Patent GB-927910-A (GB)
Title: Sensing circuit
IPC: H03K3/51
Filed: 1960-07-26
Abstract: 927,910. Magnetic storage devices. FORD MOTOR CO. Ltd. July 26, 1960 [July 31, 1959], No. 25927/60. Class 38 (2). [Also in Group XXXIX] An arrangement for generating a pulse in one or other of two output wires 21, 22 according to the polarity of an input pulse on a set wire 23 comprises two magnetic cores 10, 11 formed from material having remanent properties and provided with respective orthogonal apertures 12, 13 and 14, 15, the apertures 12 and 14 being threaded by a common clock wire 20. Initially the core 11 has a reference flux 30 established around aperture 15 by applying a pulse to wire 21 or 22 or to an additional wire (not shown). An input pulse is then applied to a set wire 23 and establishes a flux in one or the other direction around aperture 13 according to the pulse polarity. Subsequent application of a clock pulse to wire 20 causes fluxes to be established around apertures 12 and 14 which reduce the fluxes around apertures 13 and 15. This produces induced voltages in both output wires 21, 22. As these wires are threaded in the same sense through aperture 13 and in opposite senses through aperture 15, opposing voltages are induced in one wire and additive voltages in the other, depending on the relative flux directions around apertures 13 and 15. The effective output is provided by the wire having additive voltages. Succeeding cycles of operation merely comprise the sequential application of input and clock pulses, maximum output voltage being obtained by the use of clock pulses of alternate positive and negative polarity. Specification 927,906 is referred to.
Patent GB-337512-A (GB)
Title: Improvements in and relating to sound-reproducing apparatus
IPC: G11B17/20
Filed: 1929-08-26
Abstract: 337,512. Continuous Gramophones, Ltd., (Oyston, W. R.). Aug. 26, 1929. Magazine gramophones.-Relates to magazine gramophones of the kind described in Specification 304,070, in which the turntable is arranged vertically, and consists in providing improved means for automatically switching the driving motor on and off. A mercury switch 19 is mounted in clips on a plate 15 pivoted at 16 to a bracket 17 on the tone-arm 10. A vertical rod 25, balanced by a weight C, is pivoted to a bracket 26 on the tone-arm, and carries at its upper end a brush 60 which bears on the record. The rod 25 has acoll ar 24 normally engaging under a finger 22 on the plate 15 and holding up the latter so that the switch is in circuit-closing position. When the reproducing needle N arrives at the end ofthe record, the brush 60 continues to move inwards, moving the rod 25 so that the shoulder 24 is withdrawn from under the finger 22. The plate 15 thereupon overbalances, and tilts to the position shown in Fig. 2, so that the mercury switch breaks the motor circuit. The sound-box S is at once lifted from the record by mechanism (operating as described in Specification 304,070) comprising an arm 13 and a rod 14. The latter raises another rod 33, pivoted thereto, and the rod 33, engaging with a guide 35 on the plate 15, turns the piate. to its original position, the motor circuit being thus closed again. A hook 37 on the; plate 15 at the same time restores the rod 25 to the position in which the collar 24 lies under the finger 22. Means are provided for preventing accidental movement of the brush 60 which would result in release and overbalancing of the switch plate 15 when the sound-box is in the non-playing position. The mechanism described is associated with the automatic needlechanging device described in Specification 313,480.
Patent GB-1209316-A (GB)
Title: Improvements in golf balls and their method of manufacture
Inventor: DAVIES HENRY NORMAN
IPC: A63B37/00
Filed: 1967-06-06
Abstract: 1,209,316. Golf ball core. GOLF BALL DEVELOPMENT Ltd. 20 May, 1968 [6 June, 1967], No. 25947/67. Heading A6D. As shown in Figs. 1 and 2, a core for a golf ball comprises a pair of rubber or like resilient and elastic hemispherical shells 10 each having an integral and radially inwardly projecting lip 12 in abutment with the lip of the other shell to seal a liquid filling within the hollow sphere formed by the shells. The core may be further provided with an integral and radially outwardly projecting flange 11 which facilitate location and handling of the shells during manufacture of the core. The cores are manufactured by applying adhesive to the rim and a radially inwardly projecting lip of one or both hemispherical shells, completely filling each shell with liquid and assembling the shells with their rims and lips in abutment to form a spherical liquid filled sealed core. Assembly may take place in a hinged two part jig and the flange 11 may be trimmed off prior to winding the core. To manufacture a golf ball the core is frozen to solidify the liquid filling, wound with an elastic tape and/or thread and then provided with a covering.
Patent GB-999873-A (GB)
Title: Improvements in and relating to pipe hanging mechanisms for well apparatus
IPC: E21B33/043
Filed: 1964-06-24
Abstract: 999,873. Wells &c. FMC CORPORATION. June 24, 1964 [July 9, 1963], No. 26030/64. Heading E1F. A well pipe hanging mechanism comprises a body 14 having a passage 38 therethrough, a hanger 10 contractable to engage a pipe 210 in the passageway, and a sleeve 16 movable from a hanger protecting position (Fig. 2) to a position displaced from the hanger (Fig. 3). The body is a sub-aqueous wellhead, the hanger comprises segments 12 each having a seal 142 and a slip 160, and the sleeve and hanger are moved by fluid pressure. Fluid supplied by a duct 78 raises the sleeve to the position shown in Fig. 3, the fluid then passing through a groove 82 to move an annular piston 115 to the position shown in Fig. 3 to press the segments into engagement with the pipe. The pipe is finally hung by its weight shearing pins 166 and moving the slips downwardly. The segments are retracted by supplying fluid to a duct 76 to raise the piston which is connected by bolts 182 to the segments.
Patent GB-1473954-A (GB)
Title: Tape recording and/or replay machine
IPC: G11B15/44
Filed: 1975-09-12
Abstract: 1473954 Cassette tape record/playback machine Z J MARFY and J N NAISH 12 Sept 1975 [12 June 1974] 26126/74 Heading G5R A tape recording and/or replay machine has two parallel rotatable spindles 2, 3 to engage in respective spool hubs of a twin, side-by-side, -spool tape cassette, a tape drive capstan 11 driven by a motor 7 and co-operating with a pinch roller 28, a reversible motor 12 driving a drive pulley 13 rotatable about an axis parallel to the axes of spindles 2, 3 and passing through a line 18 normal to the line 19 joining spindles 2, 3, a belt 20 passing around pulley 13 and passing around and driving pulleys 14, 15 respectively adjacent wheels 4, 5 on spindles 2, 3, and a support 16 carrying pulleys 14, 15 and rotatable about an axis 17 parallel to the spindle axes and passing through said line 18, whereby rotation of motor 12 in one direction causes support 16 to rotate to engage pulley 14 with wheel 4 to effect forward wind whereas rotation of motor 12 in the other direction rotates support 16 to engage pulley 15 with wheel 5 to effect rewind. Pulleys 14, 15 may engage wheels 4, 5 via the belt 20. To effect recording or playback a solenoid 41 is energized to pull rod 38 upwards so that, via links 42, 44, a plate 23 carrying magnetic heads 21, 22 and pinch roller 28 is pivoted clockwise about pivot 24 to the operative position, the movement of rod 38 also causing a tongue 37 thereon to engage and release a brake 33 from wheel 5, the brake 33 engaging and releasing brake 32 from wheel 4, and a shoulder 50 on rod 38 moving to permit spring 47 to act via lever 45 on the spindle 48 of pulley 15 to pivot support 16 clockwise so that pulley 14 engages wheel 4 to drive the take-up spool, the energization of motor 12 at low speed in the direction to drive the take-up spool acting via the belt 20 to pivot support 16 toward wheel 4 thereby reinforcing the action of lever 45. A spring 36 between brakes 32, 33 normally urges both brakes on in the stop mode. To effect fast rewind or forward wind, solenoid 41 remains deenergized, but a solenoid 40 is energized to release brakes 32, 33, and the high speed energization of motor 12 in the appropriate direction causes the tension of belt 20 to rotate support 16 and engage pulley 15 with wheel 5 or pulley 14 with wheel 4. A pivoted plunger 56, operating a microswitch 58, is engageable with the cassette to prevent operation when a cassette is not present, and a pivoted plunger 59 operating switch 61 senses part of the cassette to prevent double recording. A cassette guide pin 51 includes an optical end-of-tape sensor operating to stop tape drive. Rotation of take-up spindle 2 is detected by a sensor (not shown) operating to switch the machine off if spindle 2 is not rotating when it should be.
Patent GB-534976-A (GB)
Title: Improvements in keys for typewriting machines
IPC: B41J5/12
Filed: 1939-09-19
Abstract: 534,976. Typewriter key covers. ROYAL TYPEWRITER CO., Inc. Sept. 19, 1939, No. 26180. Convention date, Oct. 1, 1938. Drawings to Specification. [Class 2 (iii)] [Also in Group XVI] Transparent covers for keys for typewriters &c. are made of a methyl methacrylate plastic. The cover comprises a disc having a concave upper surface and held in place by a cap having a flange so shaped as to be flush with the top surface of the disc. Specifications 534,977 and 535,007, [Group XVI], are referred to.
Patent GB-897053-A (GB)
Title: A new ether of methyl reserpate and salts thereof and a process for their manufacture
IPC: C07D459/00
Filed: 1960-07-27
Abstract: The invention comprises methyl 18-O-methyl reserpate (including its racemic and optically active forms) and its salts, together with their preparation by reacting methyl reserpate or a salt thereof with diazomethane in the presence of a strong inorganic Lewis acid, preferably below 10 DEG C.  The starting material may be generated in situ by reacting diazomethane with reserpic acid or a salt thereof, adding the Lewis acid initially or after formation of the methyl ester.  The above compounds are tranquillisers, and may be formulated with conventional carriers for enteral or parenteral administration. Specified forms include tablets, dragees, capsules, solutions, suspensions, elixirs or emulsions, and two tablet preparations are detailed.  Specified acid addition salts include those with both inorganic and organic acids, e.g. hydrochloric, ascorbic, salicylic and p-aminosalicylic acids.  They may be used in veterinary medicine in admixture with animal and poultry feedstuffs or they may be incorporated in the drinking water of birds.
Patent GB-1043348-A (GB)
Title: Vat dyes comprising azo groupings and their production
Inventor: WEIDINGER HANS
IPC: C09B43/00
Filed: 1963-07-03
Abstract: The invention comprises dyes having the general formula <FORM:1043348/C4-C5/1> in which R denotes a 1,3-phenylene radical, a 1,4-phenylene radical or a 4,41-diphenylene radical and the radicals A1 and A2 denote identical or different vattable radicals attached to the quinazoline ring via amino groups and a process for the preparation thereof which comprises bilateral condensation of a compound of the general formula <FORM:1043348/C4-C5/2> with one or two vattable amines in an organic solvent which does not react under the reaction conditions, at a temperature of from 100 DEG  to 220 DEG C.  Among the vattable amines specified are 2-amino-, 1-amino-3-chloro-, 1-amino-4-benzoylamino- and 1,4-diamino-2-[2-phenyloxa-diazolyl - (5)] - anthraquinone, 4 - aminoanthraquinone - 1(N),2 - benzacridone and 4 - amino - anthrapyrimidine. Examples are furnished. The dyes are particularly suitable for dyeing and printing cotton and polyamide textile materials.  Quinazoline chlorides to be used as starting materials may be prepared by acylating anthranilamide with 3-nitrobenzoyl chloride, 4-nitro-benzoyl chloride or 4-nitrodiphenyl-41-carboxylic chloride, cyclizing the acylaminobenzamides with alkali to form the corresponding hydroxy-quinazolines, converting the latter with alkaline glucose solution into azo compounds and exchanging the hydroxyl groups in the latter for chlorine atoms by means of phosgene.
Patent GB-444188-A (GB)
Title: Improvements in or relating to cash registers
IPC: G06C11/02
Filed: 1934-09-14
Abstract: 444,188. Cash registers. BURROUGHS ADDING MACHINE CO., 6071, 2nd Boulevard, Detroit, Michigan, U.S.A. Sept. 14, 1934, No. 26398. Convention date, Sept. 15, 1933. [Class 106 (i)] In a cash register, certain control members and the indicator wheels of the item-counters and totalizer are rendered inaccessible and invisible by a normally locked lid, which lid also covers a looking means controlling additional covering means for some of the control members and indicator wheels. The invention is described as applied to the key-operated cash register forming the subject-matter of Specifications 445,540, 447,263, 449,004, and 449,005 and provided with a sectional casing forming the subject-matter of Specification 447,264. The upper front part of the casing is provided with a hinged lid 44, Fig. 3, normally secured in closed condition by a lock, not shown. Opening of the lid gives access to an operation-control lever 36 described in Specification 446,691, releases the cash-drawer and exposes item-counters 29 and reset counter 35. Now, upon the turning of a key in a lock 69, a slide 60, Fig. 6, is moved to the right to expose the totalizer wheels through apertures 23, and a shutter 73 is rocked clockwise to give access to a resetting lever 25. A sequence of operations is enforced by a full-stroke device applied to the resetting lever, means to prevent the removal of the key from lock 69 until the shutter is restored, and the fact that the key when in the lock prevents the closing of the lid.
Patent GB-689451-A (GB)
Title: Improvements in or relating to thermionic valve oscillators
IPC: H03B5/22
Filed: 1947-09-30
Abstract: 689,451. Valve generating circuits. PHILIPS ELECTRICAL, Ltd., BEAVEN, C. H. J., CAPLE, K. M., and DELL, H. A. Dec. 29, 1948 [Sept. 30, 1947], No. 26413/47. Class 40 (vi). A resistance-capacitance oscillator has a frequency determining network comprising a first arm including a resistance and a capacitance in series and a second arm including a resistance and a capacitance in parallel, the two arms being connected in series between the anodes of two valves at which exist out of phase potentials such that the junction of the two arms which is connected to the control grid of one valve is at a relatively low potential. A low output impedance from the frequencydetermining network is thus obtained. The anode of a valve V2 is coupled to the anode of an amplifier valve V1 through a first arm Z1 comprising resistor R1 and capacitor 22, in series with a second arm Z2 comprising a parallel arrangement of resistor R2 and capacitor 23. The junction of the arms is connected to the grid of the amplifier valve V1 to form a " see-saw " type circuit and the output of valve 1 is fed back regeneratively through a capacitor 15 to the grid of valve V2 to produce oscillation. The frequency of oscillation is varied by adjusting ganged capacitors 22, 23 and their associated padding capacitors. The output is preferably taken from terminals A coupled to the anode or valve V2 and a stabilizing lamp 8 is included in the regenerative feed-back path and in a feed-back path for valve V2.
Patent GB-940488-A (GB)
Title: Penicillins
Inventor: SJOBERG BERNDT OLOF HARALD
IPC: C07D499/00
Filed: 1961-07-21
Abstract: Relates to a -azidobenzylpenicillin of the formula <FORM:0940488/C2/1> and non-toxic salts thereof, which may be prepared by reacting 6-aminopenicillanic acid or a neutral salt thereof with a compound of the general formula C6H5.CHN3COY wherein Y is a functional group capable of reacting with the NH2-group in 6-aminopenicillanic acid to form the bridge -CO-NH-; examples of such compounds are a -azidophenylacetyl chloride and mixed anhydrides derived from a -azidophenylacetic acid and other carboxylic acids. Specifications 873,049 and 940,489 are referred to.
Patent GB-1461897-A (GB)
Title: Pharmaceutical compositions
IPC: A61K31/42
Filed: 1975-06-23
Abstract: 1461897 Pharmaceutical compositions ROUSSEL-UCLAF 23 June 1975 [21 June 1974] 26514/75 Heading A5B A pharmaceutical composition comprises 3- (3', 4'-dichlorophenyl)-5, 5-dimethyl-oxazolidine-2, 4-dione in association with a pharmaceutical vehicle. The composition may be administered parenterally, orally, perlingually, topically or rectally.