baber/WOPTO huggingface dataset:
Patent GB-462227-A (GB)
Title: Improvements in the manufacture and production of polyamino-1.9-anthrapyrimidines
IPC: C09B5/16
Filed: 1935-07-29
Abstract: Polyaminoanthrapyrimidines are prepared by heating an amino-1.9-anthrapyrimidine sulphonic acid with ammonia or an amine containing at least one exchangeable hydrogen atom attached to nitrogen.  Suitable amines are methylamine, dimethylamine, ethylamine, diethylamine, butylamine, dibutylamine, oxyalkylamines such as b -oxyethylamine, b -oxypropylamine, g - oxypropylamine, cycloalkylamines, aniline, p-toluidine, methylaniline benzylamine, b -phenylethylamine, piperidine, aminopyridines, aminoquinolines.  The aminoanthrapyrimidine sulphonic acids are prepared by sulphonating amino-1.9-anthrapyrimidine or its derivatives with monohydrate or oleum or by treating a 1-aminoanthraquinone sulphonic acid having at least one further amino group with formamide.  Reaction is preferably carried out in aqueous solution at 100--250 DEG  C.  In some cases salts which combine with sulphurous acid or oxidizing agents are added.  In examples: (1) 5-amino-1.9-anthrapyrimidine-2-sulphonic acid (prepared by reacting 1.5-diaminoanthraquinone-2-sulphonic acid with formamide) is condensed with ammonia, methylamine, butylamine, dimethylamine, piperidine, ethylamine, diethylamine, dibutylamine, b -oxyethylamine, 3-oxypropylamine, 3-oxybutylamine, aniline, methylaniline, 1- or 2-aminonaphthalene, cyclohexylamine or benzylamine: (2) 4-amino-1.9-anthrapyrimidine sulphonic acid (prepared by treating 1.4-diaminoanthraquinone-2-sulphonic acid with formamide) is condensed with ammonia or methylamine.  Many of the products are dyes for acetate artificial silk.
Patent GB-382636-A (GB)
Title: Improvements relating to regulating devices for dynamo-electric machines
IPC: H02P9/26
Filed: 1931-07-28
Abstract: 382,636. Automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and DAVIES, L. J., 147, Murray Road, Rugby. July 28, 1931, No. 21562. [Class 38 (iv).] A characteristic, such as the voltage current or speed of a dynamo - electric machine is automatically regulated by means of a thermionic diode 5 arranged to control the current through a vapour electric discharge device 1 in its field circuit. The cathode heating current of the diode, which is preferably run at saturation, is subject to the regulated quantity and its conductivity variation is arranged to vary the phase relation of the voltage-control electrode 4 of the device 1 with reference to its anode voltage. The field 3 of the dynamo is supplied from a transformer 2 and the average value of the rectified current passing through the device is determined by the phase of 'the voltage in the control grid. For this purpose the cathode 6 of the diode and the anode of the device 1 are connected to the opposite ends of the transformer secondary, the grid 4 of the device is connected through a resistance 9 to the anode 7 of the diode, and an inductance or condenser 8 is connected between the anodes of the diode and vapourelectric discharge device. An auxiliary generator driven by a motor the speed of which it is requested to keep constant may be connected to the cathode of the diode 5, and. the motor field to the anode of the device 1. Specification 292,001, [Class 38 (iv), Electric supply and transmission systems &c.], is referred 'to.
Patent GB-933624-A (GB)
Title: Positive clutch synchronizing mechanism
IPC: F16D23/06
Filed: 1962-06-05
Abstract: 933,624. Positive clutches; reversing gearing. CLARK EQUIPMENT CO. June 5, 1962 [June 19, 1961], No. 21606/62. Class 80 (2). A positive clutch selectively connecting either of two gears to an intermediate collar member has synchronizing means operable when shifting from one gear to the other and inoperable when shifting from intermediate neutral to either gear. In a reversing gear in which a driving shaft 12 drives a driven shaft 32 through gears 26, 30 or 28, an idler (not shown) 34 for forward and reverse drive, the gears 26, 28 are clutchable to the splined sleeve 42, rigid with the shaft 12, by a sliding dog clutch member 38. A flange 39 formed on the clutch member 38 has apertures 50 for the reception of shouldered pins 52 rigid with conical surfaced friction clutch members 55, 56, and for the reception of split pins 64, 66 endwise engaged with the friction members 55, 56 and urged apart radially by springs 68. The split pins, which are of semicircular section, have shoulders 69, 70 respectively offset to the centre of the pins. When shifting from the neutral position shown to either gear the clutch member flange 39 may slide freely without contacting the shoulders on the split pins and thus the synchronizer clutch members 55, 58 or 56, 60 are not engaged. Shift from one gear to the other, e.g. from gear 26 to 28, entails the engagement of the flange 39 with the shoulder 69, thereby moving the friction ring 56 into engagement with the clutch member 60 rigid with the gear 28. Relative rotation of the gear 28 to the shaft 12 due to lack of synchronism moves the flange 39 relative to the pin 52 such that the aperture 50 contacts the reduced diameter portion of the pin baulking further axial movement of the flange 39 until synchronism is achieved by clutch 56, 60 and the large diameter of the pin 54 may pass through the aperture 50, thus allowing full axial travel of the clutch member 39 to engage teeth 48 on the gear 28. U.S.A. Specification 2,667,955 is referred to.
Patent GB-910074-A (GB)
Title: An improved derrick construction
IPC: B66C23/60
Filed: 1961-06-15
Abstract: 910,074. Derricks. MANDELLI, A. June 15, 1961, No. 21619/61. Class 78 (4). Both the hoisting winch 16 and the topping winch 7 of a derrick are mounted on the boom 3, the topping cable 4 passing over a pulley 6 to the boom-supporting, structure. As described, both winches are driven by a motor 11 through worms 9, 18 and gears 8, 17. So that the winches may be used independently, a clutch 10 is provided. When the topping winch is operated, the hoisting winch also turns so that level luffing is provided. The motor could be arranged with its axis parallel to those of the winches and it and/or one or both of the winches could be placed above the boom. Alternatively, separate motors may be provided for the two winches.
Patent GB-257936-A (GB)
Title: Improvements in winding devices for springs
IPC: G04C1/06
Filed: 1926-09-02
Abstract: 257,936. Mombur, G. Sept. 5, 1925, [Convention date]. Addition to 245,169. Winding-apparatus.-The conducting finger of the parent Specification, which closes the magnet circuit to operate the winding pawl, is now made independent entirely of the clockwork and is reversed in its action, i.e. in the normal rest position of the armature the .magnet circuit is closed by. the conducting finger and interrupted when the armature is attracted. The armature b of the magnet u has a projection e that passes through a U-shaped recess in the conducting finger h and actuates the winding pawl a for the spring barrel d. When the armature is in its normal rest position, Fig. 2, the finger h makes contact with a part k, k<1> carried by, but insulated from, the friction lever i, thus closing the magnet circuit. The armature is attracted and the pin e knocks the finger h of the part k, k<1>, thus breaking the circuit. Winding of the mainspring by the pawl a thus continues until the spring c of the pawl fails to overcome, the mainspring sufficiently for the armature to return to its rest position and the finger h to its contacting position. Subsequently, winding is resumed when the mainspring has unwound sufficiently for the finger h to rise and close the magnet circuit.
Patent GB-517380-A (GB)
Title: Improvements relating to aircraft undercarriages with resilient wheel units
IPC: B64C25/00
Filed: 1938-07-21
Abstract: 517,380. Pneumatic springs. DOWTY, G. H. July 21, 1938, Nos. 21704 and 27189. [Class 108 (iii)] [Also in Group XXXIII] An aircraft undercarriage includes a shock absorber comprising a cylinder 5 pivoted at 3 to the undercarriage leg 1, and a piston 7 connected by a link 8 to a pivot 4. Liquid is displaced from the cylinder 5 to a chamber 9 in the hollow spindle of the wheel past a valve 16 and through a passage 19. The valve is readily accessible by removal of a cap 18. The liquid displaced into the spindle acts against an idle piston 20 which retains compressed air in the chamber 9, and separates the liquid from the air. The other end of the spindle chamber is closed by a plug 28 having an inflation fitting 23. Specifications 517,370 and 517,373, [Both in Group XXXIII], are referred to.
Patent GB-685388-A (GB)
Title: Improvements in or relating to photographic cameras
Inventor: TAIT WILFRED ELIOT
IPC: G03B17/42
Filed: 1950-09-04
Abstract: 685,388. Photographic cameras. AMERICAN SAFETY RAZOR CORPORATION. Sept. 4, 1950, No. 21736/50. Class 98 (i). A disc-like film-holder for a photographic camera includes a film-carrying base, a cover-plate rotatably mounted on the base and provided with an aperture normally closed by a shutter, said aperture being arranged eccentrically with respect to the axis of rotation of the cover-plate and overlying the film carried by the base whereby successive sections of the film are brought under the aperture on rotation of the cover-plate, means adjacent the aperture for detachably securing a lens and shutter mounting to the cover-plate in registration with the aperture, and means engageable by the mounting upon its attachment to the coverplate to open the shutter. As shown, Fig. 6, the film holder includes two rings 1, 1<SP>x</SP> having similar recesses a in which fits a disc 3 supporting a film 4 on each side. The discs are held together, with studs 2 (Fig. 7) on one plate entering apertures in the other, by adhesive strip 3x. The films have notched edges engaging studs 2 to prevent rotation. Further similar recesses b in rings 1, 1<SP>x</SP> hold the edges of coverplates 5, which are turned over the edges of plates 6 having image apertures 6x which are normally closed by shutter plates 7. Each shutter-plate 7 is fast with a toothed wheel 8 pivoted at the centre of the film holder. Each plate 5 has a raised portion 5x, apertured to receive bayonet-fashion a mount 12 for a conventional lens and shutter, and the mount 12 has rack teeth 14 which, when the mount is inserted, engage the toothed wheel 8 and rotate it to open the shutter. A rib on ring 1 has recesses into which a spring-clip 10 snaps. After an exposure has been made, plate 5 is rotated with respect to the rings and film until clip 10 snaps into the next recess. Further exposures are made until a complete ring of images has been recorded on the film. A stoppin by the last recess then prevents further rotation. The lens mount 12 is removed, closing the shutter 7, and is then inserted on the other side and the second film is exposed similarly. When both films have been exposed the film holder may be sent through the post for processing and replacement of the exposed film. Mount 12 may carry a direct-vision viewfinder of the kind in which front and back apertures are formed in plates hinged to fold down on the mount. If desired, the camera may be constructed to use one film only. Specification 674,849 is referred to.
Patent GB-441865-A (GB)
Title: Improvements relating to securing boxes, bales and the like
IPC: B65D63/10
Filed: 1934-07-25
Abstract: 441,865. Making bale ties. GERRARD INDUSTRIES, Ltd., Vernon Place, Southampton Row, London.-(Meto Ges. ; 350, Vogelsangerstrasse, Bickendorf, Cologne, Germany) July 25, 1934, No. 21809. [Class 83 (ii)] Wire.-A wire strapping for boxes, bales, &c. is formed with hard steel wire of oval or flattened cross-section, and having an elongation not exceeding 6 per cent before failure, which is coiled, crimped, or bent substantially transversely to the plane of the major axes by a machine, other than a twisting machine for producing multiple helices as described in Specification 426,556, [Group XVII]. The wire may be unannealed and may be formed from hard, bright, round wire by a rolling process without heat treatment. The major axis may be from 1¢ to 3¢ times the minor axis. In the form shown, the end 1 is bent into a return spiral 2, leaving room for the insertion of the other end 3, and the whole is crushed to lock the parts. Specification 225,760, [Class 94 (i)], also is referred to.
Patent GB-516271-A (GB)
Title: Improvements in or relating to horse-shoes
IPC: A01L7/04
Filed: 1938-07-25
Abstract: 516,271. Shoes for animals. DAVEY, H. W. July 25, 1938, No. 21963. [Class 67] Calks are adapted to be fitted to shoes while these are on the hoof, the calks being inserted in inclined holes 17, situated between the nail holes, and secured in place as by riveting over at 23. A recess 19 coaxial with the hole 17 facilitates the insertion of the calk which may be shaped as shown in Fig. 5 and project below the plane of the nail heads.
Patent GB-725250-A (GB)
Title: Improvements in or relating to mounting indirectly heated cathodes
Inventor: SMYTH JOHN ARUNDEL
IPC: H01J1/94
Filed: 1953-08-10
Abstract: 725,250. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Aug. 10, 1953, No. 22015/53. Addition to 692,770. Class 39 (1). An indirectly heated cathode sleeve 1 is passed through a hole in an insulating support member 3 until the latter bears against a stop portion 2, and then the whole of the projecting part is curled back on itself, as at 4, by a suitable tool, so that the sleeve is securely attached to the support. The widened end also facilitates the insertion of the heater.
Patent GB-542119-A (GB)
Title: Improvements in ammunition belts for machine guns
IPC: F41A9/02
Filed: 1938-07-26
Abstract: 542,119. Automatic guns. ROE & CO., Ltd., A. V.; and BEASLEY, C. R. A. July 26, 1938, Nos. 22157/38 and 9403/39. [Class 92 (ii)] Cartridges or shells d are fed to machine guns, particularly aircraft cannon, by a belt comprising two bands a, b yieldingly secured at intervals c to provide cartridge pockets, the cartridges being released one by one to feed the gun by tearing the bands apart. In the form shown, spiked rollers e driving the bands are rotated by a hydraulic motor (not shown) which supplies sufficient tension to keep the belt taut. An auxiliary hydraulic motor (not shown) augments the power drive at intervals determined by feelers k, m engaging the loaded belt. These feelers are fixed to spring-controlled piston valves x which permit supply of pressure liquid to the auxiliary motor only when one feeler is out of contact with the belt as shown. If both feelers are contacted, the supply of liquid to the auxiliary motor is cut off. The bands may be fed over spiked rollers g, f mounted on arms n turning on pivots o under the control of eccentrics p to permit of threading the bands.
Patent GB-1515903-A (GB)
Title: Arrangement for determining the quantity of fuel injected in mixture-compressing internal combustion engines
IPC: F02D41/34
Filed: 1975-05-22
Abstract: 1515903 Automatic control of fuel injection for IC engines ROBERT BOSCH GmbH 22 May 1975 [5 Dec 1974] 22162/75 Heading G3N The fuel injection period of an I.C. engine is determined by addressing a memory containing operating characteristics for the engine by the instantaneous value of the throttle opening or engine speed to obtain an output word of which the most significant bits are stored while the least significant bits are interpolated by averaging over a period determined by the engine speed to obtain a final word which defines the injection period. In the arrangement shown the position of throttle 11 is converted into a 5-bit digital word which is stored at 14 and the speed of the engine, monitored by transducer arrangement 16, 17 is also converted into a 5-bit word and stored at 21. A read out store 22 contains the performance curves of the engine as an 8 x 8 matrix of 8-bit words and to ensure an accurate output each of the seven intervals in the store are subdivided into 4 interpolation stages. In operation the two nearest 8-bit words will be selected by address selector 23 from the input data from stores 14, 21 and the 16 additions forming the interpolation are made by the calculating unit 24 to produce a 12-bit word of which only the 8 most significant bits are passed on to converter 26 and to set a bi-stable to start the fuel injection pulse. The converter includes an 8-bit counter and a zero sensing gate and, in operation, the counter is counted to zero by the frequency f 2  when the gate emits a pulse to reset the bi-stable and terminate the injection pulse. The frequency f2 may be changed to provide different fuel levels for cold starting and warm-up or can respond to fed back smooth running or air number signals.
Patent GB-188802-A (GB)
Title: Improved apparatus for aerating liquids and delivering them to glasses or bottles or for filling siphons
IPC: B67D1/04
Filed: 1921-08-22
Abstract: 188,802. Sager, E. E., and Aschenbrenner, C. F. Aug. 22, 1921. Combined aerating and bottling apparatus; injector apparatus; mixing- apparatus.-A device for aerating and dispensing liquids comprises a storage chamber from which the liquid and gas pass through an injector device and through tubes outside the chamber containing mixing-appliances to nozzles for delivering the aerated liquid to bottles or siphons. The storage chamber 2 consists of a cylinder open at its lower end, the lower edge fitting into a groove 4 in the base 1 of the apparatus provided with packing 5. Water and gas inlets and a vent pipe 42 are controlled by valves 28, 31, 47 in the base. The gas enters through an arched pipe 35, the end of which projects into a perforated stand pipe 37 forming an injector from which the water and gas pass to tubes 10 arranged at the sides of the container 2 and containing perforated convex discs 48. The lower ends of the tubes 10 are screwed on to bosses on the base 1 and the upper ends pass through bosses 7 on the chamber 2, so that screwed caps 13 on the tubes 10 compress the packing 5. The caps 13 are provided with valves 15, and to one is secured a goose-neck 17 with a seating 18 for filling bottles. To the other cap 13 is secured a hinged arm 23 with a seating 24 by which the nozzle of a siphon can be pressed against a seating 21 surrounding a nozzle 20.
Patent GB-222642-A (GB)
Title: Improvements in press boxes for use in baling presses for compressing cotton, jute, wool and other materials
IPC: B30B9/30
Filed: 1923-09-05
Abstract: 222,642. Roberts, H. I. Sept. 5, 1923. BaLing-presses.-In baling-presses of the type in which the press boxes travel in and out of the press, the box is strengthened at the fixed end by bars F, Fig. 1, connected to straps G on the box, to the carriage E, and to one of the lower box straps. A bracket L on a door forming the upper part of the side of the box engages under a bracket O on the fixed parts to prevent lifting during compression. The straps G have hooked ends P, P<1> engaging with a slotted bar M connecting the doors J, D. After compression, the bar M is moved to release the doors J, D, hinged respectively to the upper and lower portions of the side, and the end and side doors open into the position shown in Fig. 5, to allow the release of the bale.
Patent GB-294965-A (GB)
Title: Manufacture of chromic compounds
IPC: C14C3/06
Filed: 1928-08-02
Abstract: 294,965. Baumgartner, E. Aug. 2, 1927, [Convention date]. Chrome tanning.-Chromic compounds useful for tanning are obtained by reacting a solution of chromium sulphate having a basicity of about 66.6 (i.e. corresponding to the formula SO3.Cr2O3) and a concentration of about 20 per cent Cr2O3 with an alkali or a neutral salt thereof or a salt thereof with a feeble acid, for instances with caustic soda, sodium carbonate, bicarbonate, sulphite,. bisulphite, formate, acetate, or monochromate, or with ammonia. Preferably the chromium sulphate solution is directly prepared by reducing a solution of sodium monochromate with sulphur dioxide whilst adding more monochromate in small quantities at a time as the reaction proceeds, but it may also be obtained from a less basic solution by adding thereto highly concentrated alkali. A gelatinous precipitate or clear gel readily soluble in acids is obtained by the process. The product using sodium monochromate as precipitant after being washed to free it from sodium sulphate may comprise chromic hydroxide containing adsorbed sodium bichromate, or when excess of monochromate is added, a mixture approximating to the composition 2.Cr2O3.Na2Cr2O7.
Patent GB-233590-A (GB)
Title: Improvements in and relating to polishing brushes
IPC: A47L13/252
Filed: 1924-09-23
Abstract: 233,590. Collette, O. P. D. Hendrick-. Sept. 23, 1924. Handles.-In a mop of the kind in which a metallic strip is bent to shape and the swab is attached by threading the back of the swab over the strip, the projecting end 5 of the strip is bent upwards and is so constructed as to form the handle of the mop. The handle 5, extending in parallel with the portion 3 of the swab carrier, terminates in a ring 6 to afford a better hold to the hand. According to modifications, the metallic strip may be formed of two wires soldered together and opened out to form the handle, or the strip may be of rectangular cross-section and bent into the horizontal plane at the handle.
Patent GB-1445236-A (GB)
Title: Process for the preparation of 25-hydroxycholesterol and 3- alkanoyloxy derivatives thereof and pregnanes useful therein
IPC: C07J53/00
Filed: 1974-05-20
Abstract: 1445236 i-Steroids; 25-hydroxycholesterol F HOFFMANN-LA ROCHE & CO AG 20 May 1974 [21 May 1973] 22471/74 Heading C2U The invention comprises compounds of formula wherein R<SP>1</SP> is hydroxy, C 1-8  alkoxy, phenyl-C 1-8 - alkoxy, C 1-8  alkanoyloxy or benzoyloxy, and Y is Br, I, OH, C 1-8  alkylsulphonyloxy, or phenylsulphonyloxy (optionally substituted by C 1-20  alkyl, halo, nitro, cyano or trifluoromethyl) and their preparation from compounds of formula by ozonization and complex metal hydride reduction of the ozonide to give followed by sulphonation or halogenation for other compounds V. Also sulphonates V may be converted to halides V by reaction with KBr or KI. Compounds II are prepared from stignasterol by 3-sulphonation then reaction with R<SP>1</SP>H and a base. 25-Hydroxycholesterol and its 3-(C 1-8  alkanoates) (IX) are prepared from compounds V (Y= Br or I) via compounds XI, XII and X Reagents-V#XI: compounds of formula (X<SP>11</SP>= Cl, Br), e.g. #-(1,1-dimethylallyl)nickel bromide; XI#XII:, e.g. peracid; XII#X, e.g. complex metal hydrides (listed); X#IX: e.g. aqueous strong acid (fo 3-OH) or alkanoic acid (for 3-ester). Interconversions of IX are also described. An alternative route for conversion of V into IX proceeds via compounds which are the subject of Specification 1,445,237 (q.v.).
Patent GB-1370424-A (GB)
Title: Sonar apparatus
IPC: G01S7/62
Filed: 1971-09-30
Abstract: 1370424 Sonar apparatus SMITHS INDUSTRIES Ltd 30 Sept 1971 [30 June 1970] 22550/74 Divided out of 1370422 Heading H4D  The subject matter of the Specification is generally contained within Specification 1,370,422, but the claims relate to a sonar apparatus utilizing a display which includes a light source energized by successive echoes and which is scanned by a television camera used to drive a display, the range time base frequency of which is substantially less than the camera scanning frequency. The camera scans a line of neons or l.e.d.'s each representing a different direction channel. The television monitor display uses the camera scan as a line time-base which results in the frame time base representing range. Suitable deflection patterns may be chosen to provide a true polar co-ordinate display.