baber/WOPTO huggingface dataset:
Patent GB-1088310-A (GB)
Title: Electrode position control systems
Inventor: GOUGH PETER JOHN CHARLES
IPC: B23H7/18
Filed: 1965-07-26
Abstract: 1,088,310. Spark erosion. AGEMASPARK Ltd. June 17, 1966 [July 26, 1965], No. 31718/65. Heading B3V. [Also in Division G3] In spark erosion apparatus, the size of the working gap is kept approximately constant by a control system which operates to maintain constant the voltage between the electrode E and the workpiece W; a signal representative of this voltage is applied by way of a potentiometer R1 and a transistor T1 to one winding W1 of a magnetic amplifier which also has a winding W2 to which is applied a reference signal derived from a circuit R2, T2, D1. The magnetic amplifier also has bias windings W8, W9, and output windings W4, W5, W6, W7 which provide two output signals, of opposite polarity, on resistors R4, R5. Movement of the electrode E is effected by a motor A which has a field winding F excited from a D.C. source and an armature supplied from an A.C. source over back-to-back thyristors SCR1, SCR2 the gate electrodes of which are connected to the resistors R4, R5 respectively. In operation, when the gap potential exceeds a desired value set by potentiometer R1, the output signal across resistor R4 is of such polarity that thyristor SCR1 is rendered conductive, whereas the signal across resistor R5 is of opposite polarity and has no effect on thyristor SCR2. The motor A thus rotates to restore electrode E to a position in which the desired gap voltage is again present. Conversely, when the gap voltage is less than the predetermined value, thyristor SCR2 is rendered conductive and the motor A rotates in the opposite direction until the desired conditions are attained. The current in the bias windings W8, W9 may be adjusted so that the magnetic amplifier produces no output when the gap voltage is within a range of values defined by upper and lower limits, control being effected only when the voltage is outside this range.
Patent GB-1482743-A (GB)
Title: Lamp housing
IPC: F21V11/18
Filed: 1974-09-18
Abstract: 1482743 Lamps WALLACE KNIGHT Ltd 18 Sept 1974 [3 July 1973] 31736/73 Heading F4R The radiation from an ultra-violet lamp 11 employed for drying printing ink on a moving web (not shown) is cut off, if the web stops, by means of a pair of pivoted shutters 47, 48 which are movable between an inoperative position, in which they are located behind the reflector 19, and an operative position in which curved shield plates 49, 50 project through slots 51, 52 in the reflector and form a barrier to the radiation. Movement of the shutters is controlled by a solenoid (38) which rotates the rods 34, 35 carrying the shutters against the bias of springs (39a). The reflector 19 forms the inner wall of a water jacket 18 having chambers 30, 31 through which water is circulated to cool the reflector, the jacket being mounted in the lamp housing 12 by means of ribs 26, 27 which locate in grooves formed in rails 28, 29. In a modification (Fig. 4, not shown) a cooling duct into which the reflector projects is formed in the upper part of the housing.
Patent GB-537509-A (GB)
Title: Manicuring tool holders
IPC: A45D29/14
Filed: 1939-12-08
Abstract: 537,509. Manicuring appliances; chucks. COHEN, M. M. Dec. 8, 1939, No. 31820. Convention date, Dec. 8, 1938. [Class 81 (ii)] [Also in Group XXII] A manicuring tool holder is provided with a chuck device for the attachment of various manicuring tools comprising a spindle 24, 24a rotatably mounted within a hand piece 19 and secured to a coupling member driven by a cable, the spindle having a hollowed portion formed with an inclined interior surface 28 on which is secured a flat spring 29 having an arched portion 32. The manicuring tools are provided with shanks 37, formed as at 39, 40 to engage the spring 29 as shown, and are mounted in a sleeve 33 which clips over the outer reduced portion of the hand piece. The tools to be employed include a buffing tool 36, Fig. 4, an emery disc 48, Fig. 8, and a cuticle pusher 68, Fig. 11. The emery disc is dished to receive a disc of abrasive 47 held in place by bayonet locking lugs 53. The pusher 69 is mounted on a cam-follower 72 movable within the sleeve 66 against the stress of a spring 74 by a cam 80 secured to a shank 37c, having the same chuck connection as the shank 37.
Patent GB-887231-A (GB)
Title: Condenser for increasing the resolving power of microscopes operating with transmitted light
IPC: G02B21/12
Filed: 1958-10-06
Abstract: 887,231. Microscope condensers. BARABAS, J., ZSELYONKA, L., KISS, F., and LIBIK, A. Oct. 6, 1958 [May 22, 1958], No. 31863/58. Class 97(1). A condenser for increasing the resolving power of microscopes comprises an exchangeable front lens having a plane exit face and a hemispherical surface and disposed at the opposite end of the condenser from a filter which has semi-transparent metallic layers on both sides of a transparent portion, the condenser being movable transversely to its axis. As shown in Fig. 1, the condenser includes lenses 28, 29, 30 of which the front lens 30 is exchangeable, being carried by a mount which fits over the main condenser mount 35. This mount 35 is slidable under control of a screw 43 in an annular holder 40 and also supports a filter 27, Figs. 1 and 5, which has transparent portions 54, 55a, 55b and 56 and semi-transparent portions 57a, 57b. Such a condenser gives central bright ground illumination which may be converted into circular bright ground illumination by using a front lens 30 with a masking cap 52, Fig. 3, fitted on to a central opaque part 50 of cement. Dark ground illumination can be obtained by provision of a mask 52 having a transmitting zone 51 of different width. By moving the condenser at right angles to its axis, combined dark and bright ground illumination is obtained. Specification 887,230 is referred to.
Patent GB-160536-A (GB)
Title: An automatic lubricator for cycle-driving chains and the like gearing
IPC: F16N1/00
Filed: 1919-12-20
Abstract: 160,536. Ward, W. H. Dec. 20, 1919. Capillary - action lubricators.-A bicycle chain is lubricated by a wick c in contact with the teeth of the sprocket - wheel. The wick protrudes through an oil-container a attached to the frame, the exposed end of the wick being above the oil level.
Patent GB-744113-A (GB)
Title: Polyene compounds and a process for the manufacture thereof
Filed: 1953-11-18
Abstract: The invention comprises 8-[21,61,61-trimethycyclohexen - (1) - yl] - 2,6 - dimethyl - octatrien-(2,4,6)-ol-(1), and the preparation thereof and the corresponding al-(1) by condensing 4-[21,61,61 - trimethylcyclohexen - (11) - yl] - 2 - methyl - buten - (2) - al - (1) by means of a Reformatzky reaction with a g -bromo-tiglic acid ester and dehydrating the condensation product formed by heating in a vacuum to form 8-[21,61,61 - trimethyl - cyclohexen - (11) - yl] - 2,6 - dimethyl - octatrien - (2,4,6) - oic - (1) acid ester which is then reduced to the required alcohol by means of lithium aluminium hydride or lithium boron hydride and, when the aldehyde compound is required, the alcohol is oxidized with manganese dioxide.  In the example, the above compounds are prepared using g -bromo-tiglic acid methyl ester, and the ester intermediate is purified by hydrolysis with methanolic potassium hydroxide to the free 8-[21,61,61-trimethylcyclohexen - (11) - yl] - 2,6 - dimethyl - octatrien - (2,4,6)-oic acid followed by esterification with diazo methane.  g -Bromo-tiglic acid esters are prepared, for example, by refluxing tiglic acid methyl ester with N-bromo-succinimide in carbon tetrachloride to form the methyl ester.
Patent GB-884915-A (GB)
Title: Gas lubricated bearings
Inventor: STEELE HENRY JACK
IPC: F16C33/10
Filed: 1959-09-21
Abstract: 884,915. Fluid bearings. LUCAS (INDUSTRIES) Ltd., JOSEPH. Sept. 12, 1960 [Sept. 21, 1959], No. 32024/59. Class 12 (1). A fluid bearing has a hollow shaft having a wall thickness which is so chosen in relation to the diameter of the shaft and the material from which it is made, that when the shaft is stationary there is sufficient clearance to allow the shaft to start rotating freely, and the clearance is reduced with increasing angular velocity owing to the radial expansion of the shaft due to centrifugal forces so that half-speed whirl will not develop at angular velocities for which the bearing is designed. In an embodiment the shaft 8, having a flange 9 to accept axial thrusts and an extension 10 to facilitate rotating of the shaft, is positioned in a bronze bush 7 which is mounted in a mild steel cylinder 6 held in a housing 3. Pressurized gas is supplied through passages in the housing 3, to an annular space between the housing 3 and the cylinder 6 which connects to radial passages 11 leading to the clearance between the bush 7 and the shaft 8. In another embodiment the shaft has brass flanges held at each end thereof and the bronze bush is omitted. The Specification contains an equation for deducing the diameter/thickness ratio.
Patent GB-1182896-A (GB)
Title: Improvements in or relating to Disc Brakes.
IPC: F16D55/224
Filed: 1968-07-05
Abstract: 1,182,896. Disc brakes. BERGISCHE ACHSENFABRIK FR. KOTZ & SOHNE. 5 July, 1968 [25 July, 1967], No. 32118/68. Heading F2E. A motor vehicle disc brake comprises a first brake lining carrier carried on caliper means mounted for movement axially relative to a brake disc, a second brake lining carrier slidably mounted on pin means also for movement axially relative to the brake disc, and a cam operable to bear against the caliper means and against a thrust surface on the second carrier to thrust the carriers against opposite sides of the brake disc symmetrically. As shown, an annular brake disc 3 is secured at 4 to a wheel hub 2 rotatably mounted on an axle 1, Fig. 2. A floating caliper 9 is mounted on a guide portion 6a of each of two bearing pins 6 (only one shown) secured by nut 7 and spring washer 8 to a support member 5 welded to the axle 1. A brake lining carrier 12b is secured to part 9a of caliper 9, while a brake lining carrier 12a is slidable on thinner guide portions 6b of the bearing pins 6, Fig. 2. The brake is applied by a link-rod control 17 which rotates a symmetrical cam 11, Fig. 3, against a thrust member 14, secured to brake lining carrier 12a and slidable in the support member 5, and against an opposing member 15, secured to a part 9b of the caliper 9.
Patent GB-531169-A (GB)
Title: Improvements in or relating to floors emboding reinforced concrete beams
IPC: E04B5/23
Filed: 1939-06-28
Abstract: 531,169. Floors. GEAIRNS, A. J. E. June 28, 1939, No. 32185/38. [Class 20 (iv)] A floor is formed of a number of pre-cast reinforced-concrete beams 1 of I-cross-section, the upper flanges 2 of which are narrower than the lower flanges 3. A wood floor 21 is secured to fixing strips 20, attached by screws 22 to wood strips 19 mounted below and between adjacent flanges 2.
Patent GB-719923-A (GB)
Title: Improvements in workpiece feeding devices
IPC: B21H9/02
Filed: 1952-12-19
Abstract: 719,923. Feeding articles. PEE-WEE-MASCHINEN-UND APPARATEBAU WERNER PLAGEMANN GES. Dec. 19,1952 [Dec. 21, 1951], No 32293/52. Class 117 Articles are lifted out of container 2 (Fig. 1) by a rotating magnetic disc 7 and discharged into channel 18, the poles of the magnets being positioned in the face of the disc. As shown, the magnets are pot-shaped, the articles attached thereto being guided by member 21 so as to be stripped by the bevelled edge of the channel 18 and to slide down said channel to thread rollers 47, 47<SP>1</SP>. Inside the container the articles are agitated by oscillation scoop 22 which is pushed in one direction by a cam-operated plunger carried by disc 7 and is pulled back in the other direction by cable 32 tensioned by spring 29 and adjusted at 34, the plunger being normally flush with the face of the disc. The articles are discharged one by one from channel 18 (Fig. 2) by twin noses 35, 36 which are carried by pivoted spring arms 37, 38 operated by cam discs 43, 44 mounted on the thread rollers.
Patent GB-633039-A (GB)
Title: Improvements in or relating to reciprocating electric motors
IPC: H02K33/00
Filed: 1947-12-08
Abstract: 633,039. Reciprocating motors. BARRETT, J. Dec. 8, 1947, No. 32331. [Class 35] In a motor a wound armature reciprocates between a pair of wound field magnets coaxial therewith and by its motion brings about the necessary changes of connections, e.g. in a circuit arranged as shown, the bar F for making and breaking the circuit at G being moved near the end of their stroke by the bars E carried by the armature D.
Patent GB-372243-A (GB)
Title: Improvements in automatic bottle filling machines acting with counter pressure
IPC: B67C3/06
Filed: 1931-11-21
Abstract: 372,243. Bottling-machines. NIELSEN, N. C., 1, Smedjegatan, Malm÷, Sweden. Nov. 21, 1931, No. 32337. [Class 125 (ii).] In an automatic bottle-filling machine of the counterpressure type provided with a rotating ring of filling pipes and rotating, vertically reciprocal bottle supports, said supports are raised by hydraulic means, fluid pressure being constantly present at and tending to lift the bottle supports, which are periodically depressed by cam means. As shown, each supporting plate 1 is mounted on a rod 2 riding in guides 3 and connected by a rod 9 to a piston 7 in a cylinder 6. Each cylinder is connected to a common distribution pipe 10 and an equalizing container which is in the form of a weighted piston 12, which maintains a substantially constant fluid pressure in the system. The plate 1 carrying a filled bottle is depressed by a roller 4 secured to the rod 2 and riding on a fixed guide rail 5.
Patent GB-142441-A (GB)
Title: An improved process for deoxidising and refining copper
IPC: C22B15/14
Filed: 1919-12-24
Abstract: 142,441. Strasser, A. April 26, 1919, [Convention date]. Dry processes of refining copper.-For deoxidizing and refining copper, a copper cartridge containing potassium phosphide is first added to the metal heated above its melting-point to convert the impurities, silicon, and arsenic into phosphorus compounds; then, at a higher temperature, a second copper cartridge, containing one of the metals of the alkaline earths, is added. The alkaline earth metal combines with oxygen, present as an impurity, the phosphorus compounds and copper protoxide, and the oxides formed float on the surface of the copper. The Specification as open to inspection under Sect. 91 (3) (a) of the Act states also that copper alloys may be similarly refined and that lithium may be used in the second aluminium cartridge added. This subject-matter does not appear in the Specification as accepted.
Patent GB-846873-A (GB)
Title: Improvements in or relating to the formation of electrically conducting layers
Inventor: GILDEN RONALD DENNIS KEIR
IPC: H01J29/08
Filed: 1955-11-12
Abstract: An electrically conducting layer is formed on a portion of a surface which requires to be heated to form the layer by applying to areas of the surface in the vicinity of said portion, on which a conducting layer is not required, a coating of a masking material, that is not deleteriously affected by heat to which it is subjected when said portion is heated and can readily be removed by the application of a suitable liquid which does not deleteriously affect the conducting layer, causing a substance capable of forming an electrically conducting layer to become deposited, e.g. by spraying, on said portion, to form thereon the conducting layer, and subsequently removing the masking material by the application of the liquid.  The masking material may be a suspension of graphite or kaolin, and may be removed by washing with hot water.  The method may be applied to the forming of a conducting layer on the inner surface of a vitreous window of an electron discharge device having a tubular envelope sealed to the window via a metal ring, the window being heated in an oven and sprayed with an aqueous solution of stannic chloride containing hydrochloric acid, after applying the masking material to the interior of the envelope.
Patent GB-1361052-A (GB)
Title: Transducer devices
IPC: G01F23/296
Filed: 1971-07-09
Abstract: 1361052 Automatic control of liquid level RADUN CONTROLS Ltd 3 July 1972 [9 July 1971] 32422/71 Heading G3R [Also in Division H4] A transducer head for sensing the presence of liquid comprises a body having a pair of limbs with a gap between them, two Piezo-electric elements mounted on respective ones of the limbs so as to face each other across the gap, and an oscillator and detector amplifier mounted on the body and connected to respective ones of the elements whereby an amplifier output signal in response to vibrations transmitted across the gap occurs only if liquid is present in the gap. In the Fig.1A embodiment the transducer head is a generally cylindrical stainless steel member 2 slotted at its end 3 to define two limbs in which Piezo-electric discs Tx, Rx are mounted in plugged bores 7. Ultrasonic vibrations transmitted across the slot by disc Tx are received by disc Rx whose output amplitude is compared with a reference signal to derive an error signal. For liquid level sensing, this error signal drives a motor to winch the head up or down to maintain it immersed a given amount in the liquid. For liquid level control the error signal actuates a pump or valve to introduce liquid into or withdraw it from a container. The head may alternatively be arranged to respond to liquid flowing over it. One or more heads each giving an "on-off" type signal may be arranged at fixed heights within a container.
Patent GB-1002484-A (GB)
Title: Improvements in and relating to liquefied gas tankers
Inventor: SCHLUMBERGER ETIENNE MAURICE
IPC: F17C3/02
Filed: 1964-08-10
Abstract: 1,002,484. Ships carrying liquefied gases. CONCH INTERNATIONAL METHANE Ltd. Aug. 10, 1964, No. 32430/64. Heading B7A. A tanker for transporting liquefied gases having thermally insulated tanks 1, 2, 3 within a cargo hold and a secondary barrier 1a, 2a, 3a on or in the insulation 23 between the walls 22 of the tanks and those of the holds has piping 8 adjacent to the bottom floors of the tanks connecting the tanks with each other and with a pump 12, said piping (in self-supporting rigid tanks outside them, in supported membrane tanks inside them as in Fig. 1) including piping outside the tanks, the outside piping including piping within coffer dams 4, 5, 6 and being provided with insulation 28, 29 and a secondary barrier 1b, 2b, 3b on or in said insulation.
Patent GB-263826-A (GB)
Title: Manufacture of dyestuffs
IPC: C09B3/30
Filed: 1926-12-24
Abstract: 263,826. Soc. of Chemical Industry in Basle. Dec. 24, 1925, [Convention date]. Violanthrone and isoviolanthrone dyes.-Polyhalogenated violanthrones or isoviolanthrones are treated with alkaline reducing agents under conditions more drastic than are necessary for the ordinary vatting process. Such conditions are the use of high concentrations of hydrosulphite and alkali, or the use of stronger alkaline reducing agents, such as zinc dust and caustic alkali. The new products are formed apparently by the splitting off part of the halogen; they may be isolated by oxidation of the vats so obtained or the latter may, after dilution, be directly employed for dyeing. The products from violanthrone dyestuffs yield more reddish shades than the parent materials and those from isoviolanthrone dyestuffs more bluish shades. According to examples (1) dichlorisoviolanthrone is treated with caustic soda solution and hydrosulphite, or with zinc dust and caustic soda solution, and the product isolated by blowing in air or the vat used directly for dyeing cotton. Dichlorviolanthrone and the tri-chlorinated violanthrone obtained as described in Specification 262,744 by chlorinating violanthrone with chlorine gas at 135-140‹ C. are also specified as parent materials.
Patent GB-190001-A (GB)
Title: A new or improved transmission system for motor vehicles
IPC: F16H3/08
Filed: 1921-12-06
Abstract: 190,001. Mobbs, H. Dec. 6, 1921. Variable-speed and reversing gearing comprises a main driving-shaft 1, Fig. 1, a countershaft 10, which may be the cam-shaft of an internal-combustion engine, means for obtaining a direct friction clutch drive to a driven member 6, and means for obtaining reversed @driving through frictional engaging means such as 24 mounted on and rotating with the countershaft. In the arrangement .shown in Fig. 1, a double driven clutch member 4 may be engaged alternatively with a clutch surface 3 on a disc 2 secured to the shaft 1 for a high speed, and with a surface 19 on a disc 17 for a reduced speed. The disc 17 is driven through a pair 14, 13 from the countershaft, which is constantly driven through a pair 12, 11 from the shaft 1. The frictional engaging means is a gear cone 24 secured to the shaft 10 adapted to be engaged for reversed driving by a coned rim 26 on the driven disc 4. In a modification, the disc 4 has a second frictional rim adapted to engage the gear 24 between the shafts 1, 10 to obtain a second forward reduced drive. In another form shown in Fig. 3, the frictional engaging means is a clutch surface 314 adapted to be engaged by a like surface 313 on a sliding gear 310, which drives the driven disc 304 by toothed engagement. There is a direct drive through clutch-members 303. 304 from driving- shaft 301. An intermediate speed through train 306, 307, 310, 311, 315 is brought in by sliding the clutch 314 on a sleeve 309 to engage the goar 310 while it meshes with gear 311. The sleeve 309 carries at its other end a friction clutch 316 by which a train 306, 307, 318, 319, 315 is brought into action for a low forward speed.
Patent GB-768045-A (GB)
Title: Synchro null voltage system and method
IPC: H02J3/40
Filed: 1954-11-12
Abstract: 768,045. Electric follow-up systems. BENDIX AVIATION CORPORATION. Nov. 12, 1954 [Nov. 20, 1953], No. 32903/54. Class 40 (1). Resistors are inserted in series with one or more of the multiphase (e.g. the stator) windings of a synchro to compensate for mechanical and electrical imperfections thereof. The stator S1, S2, S3, Fig. 4, is energized from a single phase source through a three-point switch 4 which, in the position shown, connects the windings S1-S3 in parallel, and in series with the so-called free winding S2. The rotor is adjusted successively to the two null positions existing under these energizing conditions, and the e.m.f. induced in the rotor at these null positions, which in the absence of the imperfections should be zero, is measured at 12. By rotating the switch 4 and making the windings S1, S3 in succession the free winding, four further rotor null positions are obtained. The rotor induced e.m.f's at the six rotor null positions are plotted, Fig. 3 (not shown), and, as shown, in the Specification, resistors R3, R4, R5 in series with the phase windings S1, S2, S3 are adjusted until the rotor voltages at the null positions are at a minimum. Resistors of these values are then housed in the synchro structure and connected permanently in series with their respective windings, Fig. 6 (not shown).
Patent GB-1518862-A (GB)
Title: Flotation apparatus with mechanical agitation
IPC: B03D1/16
Filed: 1976-08-06
Abstract: 1518862 Agitators; Rotation apparatus SOC MINIERE ET METALLURGIQUE DE PENARROYA 6 Aug 1976 [14 Aug 1975] 32962/76 Headings B1C and B2H A frusto conical air deflector 6 is attached at its upper end to the hollow central hub 1 of an agitator for a froth flotation plant, the agitator comprising two series of bars 2, 3 disposed on the generator lines of two coaxial, oppositely disposed, truncated cones and mounted at their ends on a pair of circular bases 4, 5 interconnected by the hub. Base 5 is apertured for the passage of pulp. The upper end of the hub is provided with means for supplying air under pressure and the lower end of the hub contains an axial orifice 7 and four vertical slots 8 through which air passes. Preferably the lower edge of the deflector is below the plane X of the intersection of the bars 2, 3 below the upper edges of the vertical slots 8 and adjacent the orifice 7.