baber/WOPTO huggingface dataset:
Patent GB-479285-A (GB)
Title: Improvements in speed control of electrical machines
IPC: H02P5/50
Filed: 1936-07-29
Abstract: 479,285. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd., and GIVEN, R. D. July 29, 1936, No. 20985. [Class 38 (iv)] Fluid level; fluid pressure, temperature, &c.- A variable condition, such as the pressure at a remote point of a system supplied by electrically driven pumps, is maintained constant by a controller A responsive to changes in the condition which changes the frequency of an electric generator C by shifting the brushes of a commutator motor B driving the generator. Means such as an electrical or mechanical differential R, alters the speed of a pump P, as by adjusting a liquid regulator L1, in the circuit of the motor M1 driving it, or alternatively by moving the brushes of a frequency changer exciter where the motor has a slip regulating machine. The motor speed may remain constant and a variable speed hydraulic coupling, fluid torque converter or gear between it and the pump may be adjusted by the change in frequency. The Figure shows the application of the invention to a number of pumps operating jointly, the speed adjustments being independent of pump loads. The invention extends to the control of any electrically driven machine operative on the variable condition controlled.
Patent GB-725504-A (GB)
Title: Improvements in table games
IPC: A63F7/06
Filed: 1953-07-29
Abstract: 725,504. Table games. MOIZO, A. July 29, 1953. No. 21049/53. Class 132(2). In table football wherein a ball P is projected over a table A by miniature figures F having pivoted legs I actuated by depression of a plunger G, the figures are mounted on supports E formed to be complementary in shape to grooves C arranged in a rectangular or other array so that the figures can be moved about on the table without lifting therefrom. The grooves may be formed by obstacles B on the table A, the obstacles being convex to cause the ball to lodge next a kicking leg. The figures are introduced into the array of grooves through apertures K in the boundary wall Z.
Patent GB-583445-A (GB)
Title: Improvements in air filters
IPC: F24F8/108
Filed: 1944-10-30
Abstract: 583,445. Air filters. HOLT; S., and WARD, C. V. Oct. 30, 1944, No. 21141. [Class 8 (ii)] An air filter comprises an inlet a extending over a number of spaced filter compartments b'-b' each bounded on two opposite sides by filtering material, e.g.; perforated screens c over each of which revolve wipers f located within the compartments from which the filtered air passes through outlet ducts on opposite sides of the series of filter compartments; dirt removed by the wipers is delivered to a "dead" space beneath the filter screens as described in Specification 568,835. The suction inlet may be arranged as a canopy to provide a suction area over a carding machine or the like.
Patent GB-1325838-A (GB)
Title: Disclosing light
IPC: A61C19/00
Filed: 1972-05-05
Abstract: 1325838 Dental lamp GTE SYLVANIA Inc 5 May 1972 [10 May 1971] 21163/72 Heading F4R A dental lamp comprises a dichroic reflector 18 which reflects blue light and transmits IR and a filter 20 which transmits blue light and reflects backwards yellow light and IR. A dichroic mirror 23 is provided in the housing 5 of the lamp as is a push-button switch 17. The particular wavelengths that are transmitted and reflected by the mirror 18 and filter 20 are specified, as are the materials making up the dichroic layers. The lamp is used to disclose deposits of plaque and calculus on teeth, the teeth having been first treated with sodium fluorescein thus exhibiting yellow fluorescence in the lamp light.
Patent GB-722103-A (GB)
Title: Protective circuit for an accumulator battery comprising cells connected in series
IPC: H02H7/18
Filed: 1951-09-10
Abstract: 722,103. Discharging batteries; protective arrangements. JACQUIER, M. C. J. Sept. 10, 1951 [Sept. 11, 1950], No. 21294/51. Class 38 (4). A protective circuit for an accumulator battery comprising several seriesconnected cells E1 . . . E3 consists of bridging each cell by a respective rectifier D1 ... D3, each rectifier being so connected that the direction of normal current flow is from the negative to the positive pole of its corresponding cell. Thereby, when the battery is being discharged through a load C, should e.g. one cell become fully discharged before the others due to inequalities in cell capacity, it is stated that the continuing discharge current of the other cells causes the polarity of the one cell to reverse so that the current flows through the rectifier of the discharged cell whereby to avoid recharging of the latter at a reversed polarity by the current. Such polarity reversal of a battery alternatively could be obtained by incorrect connection of a charging source. The rectifiers may either be of the dry, or electronic types, and the batteries may be of the lead or of the alkaline types.
Patent GB-1520771-A (GB)
Title: Cameras equipped with a pair of spectacle-like frames as viewfinders
IPC: G03B13/02
Filed: 1976-07-07
Abstract: 1520771 Viewfinders K J SAGATIS 7 July 1976 21380/75 Heading G2A A camera has a viewfinder consisting of a pair of twin eye-pieces h in a panel m. The panel is supported by a frame having a pair of arms g attached to a bar s which is pivoted to the camera at a point f on the optical axis. A nosepiece b is adjustable vertically.
Patent GB-1142724-A (GB)
Title: Derivatives of 2-aminoindane
IPC: C07D295/073
Filed: 1966-05-13
Abstract: 1,142,724. Derivatives of 2-aminoindane. CHEMISCHE WERKE ALBERT. 13 May, 1966 [13 May, 1965; 30 Dec., 1965], No. 21399/66. Heading C2C. Novel 2-aminoindanes of the formula wherein R 1  and R 2  are hydrogen atoms or C 1-3  alkoxy or hydroxyl groups, X represents a hydrogen or halogen atom and Y represents a C 4-7  alkylene group which may be branched and in which a methylene group or an alkylidene group may be replaced by oxygen, an imino group or a C 1-3  alkyl-substituted imino group, and their pharmacologically compatible acid addition salts are obtained (1) by hydrogenating the corresponding indene-amines, or, where Y contains an imino group, N-benzyl derivatives thereof, (2) by condensing the appropriate primary indane amines with halogen compounds, Hal-Y-Hal, wherein Hal represents a halogen atom, (3) when X represents a halogen atom, by halogenating the corresponding 2-aminoindanes in which X represents hydrogen, e.g. by the action of elementary hydrogen, or (4) when R 1  and/or R 2  represent hydroxyl groups, by cleavage of the ether bond in the corresponding 2-aminoindane in which R 1  and/or R 2  are alkoxy groups, e.g. with hydriodic acid. The indene amine compounds used as starting materials in process (1) above may be obtained by condensing the appropriate indanone-2 with a base HNY or a derivative thereof in which the group Y contains an N-benzyl imino group or by reacting an enamine of the formula wherein R 3  is an alkyl group and R 4  is an alkyl, cycloalkyl or aromatic hydrocarbon group or an aliphatic, cycloaliphatic or aromatic carboxylic monoacyl group or R 3  and R 4  together form part of an alicyclic ring, with the appropriate indanone-2. The enamine 2-oro-4- morpholino-pentene-3 is obtained by reacting acetyl 1 acetone, morpholine and p-toluene sulphonic acid. Therapeutic compositions which have analgesic, broncholytic and anorexigenic properties, show a stimulating action on the central nervous system, lead to an abbreviation of narcosis times and inhibit tussive irritation provoked by citric acid spray, contain the above indane amine compounds or pharmacologically compatible addition compounds with inorganic or organic acids, as active ingredient. The composition may be in the form of an aqueous solution, tablets or pills.
Patent GB-517296-A (GB)
Title: Improvements in or relating to electrically-controlled printer equipment
IPC: H04M15/38
Filed: 1938-07-19
Abstract: 517,296.. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd., WRIGHT, E. P. G., BRAY, F. H., WOOLLEY, G. H. W., and HYDE, G. A. M. July 19, 1938, No. 21417. [Class 40 (iv)] [Also in Groups XL and XVI] In a telecommunication exchange system comprising electrical storage equipment and printer equipment, a rotatable shaft carries a type wheel, and a commutator, electrically marked from the storage equipment, controls the setting of the shaft for selecting in turn a number of characters to be printed. Each segment of a stationary commutator 9 is connected to one contact of a switch MS. When signals are received the wiper 16 hunts over the commutator until it reaches the marked segment. The clutch 5 is then uncoupled and the type-wheel locked in position by the wheel 2 engaging with a latch 8 operated by the magnet 7. The hammer 11 prints the character, a signal is sent back to the control circuit, and the equipment is prepared to print the next signal. The control circuit may be substantially that forming the subject matter of Specification 511,695, and the storage circuit may comprise condenser groups of the type described in Specification 476,088. Specifications 457,821, [Group XVI] and 517,297, [Group XL], also are referred to.
Patent GB-1532885-A (GB)
Title: Process for coating metal surfaces without the use of electrical equipment
IPC: B05D7/14
Filed: 1976-05-24
Abstract: 1532885 Coating metal surfaces AKZO NV 24 May 1976 [30 May 1975] 21464/76 Heading B2E Acid etchable metals, e g. steel, Fe, Zn, Cu, Pb, Cd, Mg and brass are coated with an aqueous dispersion of a film forming material, e.g. a resin, wax, oil or fat, containing a carboxylic acid and dried. The metal ions formed by etching are capable of forming a negatively charged complex in the dispersion. The dispersion may also include a cationic or amphoteric surfactant, many of which are specified. Many suitable film forming resins are specified. Suitable carboxylic acids include glycolic, oxalic, mandelic, propanoic, ethoxyacetic, maleic, itaconic, malic, tartronic, glutaric, cyclobutene-dicarboxylic, tricarballylic, citric, succinic, malonic and mixtures of two or more thereof.
Patent GB-1080695-A (GB)
Title: Improvements in or relating to shift registers
Inventor: STEPHENSON WILLIAM LAWRENCE
IPC: G11C19/04
Filed: 1963-05-29
Abstract: 1,080,695. Shift registers. PLESSEY-U.K. Ltd. Aug. 28, 1964 [May 29, 1963], No. 21517/63. Heading H3B. Each stage of a shift register comprises a toroidal core A1 having an input winding 1 and an output winding 2 directly coupled to a limb of a multi-aperture core B1, core B1 having an output winding 3 coupled to a transistor amplifier T1. An input pulse is applied to winding 1 simultaneously with a clock pulse on clearing line P3 so that core A1 is switched while core B1 remains clear. A clock pulse on clearing line P1 then resets core A1 and induces a current in winding 2 to switch the flux around the minor aperture of core B1. A clock pulse is then applied to clearing winding P2 to reverse the flux around the minor aperture of core B1. Finally a pulse is applied to line P3 to clear core B1 and induce an output in winding 3 in such a direction as to cause transistor T1 to conduct. Meanwhile a further input pulse may be applied to winding 1.
Patent GB-692161-A (GB)
Title: Improvements in or relating to controls for change speed gears
IPC: F16D27/12
Filed: 1950-08-31
Abstract: 692,161. Change-speed gear. ARON, E., BANNING, A. J., and PULMAN, W. E, R. May 29, 1951 [Aug. 31, 1950], No. 21552/50. Class 80 (ii). Between an input shaft 15 of an automatic lathe, chain driven at 17 by a motor, and a parallel output work-spindle 12, drive at either of two ratios is provided by a pair of friction disc-clutches 28, 46 engaged selectively in the machine sequence as by stationary electromagnets 34, 55 or by hydraulic or pneumatic means not shown, one clutch 28 providing one ratio drive-path from the input shaft 15 through pick-off gears 53, 41, parallel intermediate shaft 16, clutch 28 and freely-mounted wheel 31 meshing an output pinion 14, whilst the other clutch 46 provides a reverted second ratio drivepath, forward or reverse, from input shaft 15 through the same pick-off gears 53, 41, further pick-off gears 39, 58, 51, sleeve 21 free on the input shaft 15, clutch 46, freely-mounted pinion 44, wheel 31 and output wheel 14. Overall change of both ratios is thus provided by the pick-off train 53, 41, effective in both ratios, whilst change in the relative ratios is provided by the pick-off train 39, 51, which is effective in only one ratio. Omission of the idler 58 from the pick-off train 39, 51 provides for both ratios being in the same direction instead of, as shown, reversed. The clutches are similar, each comprising a cup-shaped armature 59, to which is adjustably screwed and locked by a radial peg 60 a presser-plate 48, clamping interleaved friction discs 46, splined alternately to the coupled members 21, 45, against an end-face of the member 21, a spacer sleeve 49 providing a minimum limit to the air-gap. Control. The clutches 28, 46 are selectively energised by a double-pole switch 79, Fig. 2, the two-position spring-loaded plunger 81 of which is actuated automatically through the following linkage by dogs 63 on the front camshaft 61 of the lathe, which camshaft makes one revolution per cycle. Directly engaging the switch-plunger 81 is a bellcrank 71, which is snapped from one limit position to the other, as determined by a spring-plunger 77 thereon engaging fixed detent notches 78, each tima a cam-dog 63 raises and releases a lever 64, the raising of which, through a tension link 67, pivots anti-clockwise a bellcrank 68, pivotally carrying a spring-centralised pawl 75, which is thus released from one of two notches 74 in the switch-operating bellcrank 71, and becomes centralised by its spring. As the cam-dog 63 releases the lever 64, a spring 80 returns the bellcrank 68 so that its pawl 75 now engages the other of the notches 74 to tilt the bellcrank 71 to its opposite extreme, thus operating the switch-plunger 81 in one direction or the other to change-over the selector-clutches 28, 46. This action is repeated at the next engagement of the lever 64 by a cam-dog 63, the switch-plunger 81 being then moved back to its opposite extreme.
Patent GB-137093-A (GB)
Title: Improvements in and relating to fire boxes for locomotive boilers or the like
IPC: F22B13/14
Filed: 1918-12-23
Abstract: 137,093. Marks, E. C. R., (Locomotive Firebox Co.). Dec. 23, 1918. Fire-boxes.-A locomotive fire-box is divided at its forward end by one or more vertical waterwalls which circulate the boiler water from the space below the flues to the space above the firebox crown sheet. Each wall has a rearwardly inclined tubular base 22 and a triangular hollow body portion 23. The open top of the body portion and the tubular extension 24 of the base are flanged, the flanges being welded at their edges in openings in the fire-box crown 6 and the throatsheets 5. The wall is further supported by the boiler stay-bolts 34. A wall may be made from a single piece of suitably-shaped sheet metal folded upon itself and welded at its meeting edges 26, the wall being then made rigid by the insertion of a number of transverse stay-bolts. The sides of the walls and the fire-box side sheets form supports for the inclined brickwork arch 39. In a fire-box having two water-walls, the arch is formed in three sections. Transverse vertical baffles may be fitted at the vertical edges of the walls.
Patent GB-1498017-A (GB)
Title: Isophorone production using a potassium hydroxide catalys
IPC: C07C67/00
Filed: 1974-05-15
Abstract: 1498017 Isophorone production BP CHEMICALS INTERNATIONAL Ltd 18 April 1975 [15 May 1974] 21651/74 Heading C2C A process for the production of isophorone comprises feeding a mixture comprising 65 to 85% w./w. acetone, 35 to 15% w./w. water and 0-7 to 0À3% w./w. potassium hydroxide to an intermediate point in a reaction column, operating at elevated temperature and pressure, at such a rate as to maintain an acetone/water azeotrope reflux having a potassium hydroxide concentration in the range 300 to 1000 p.p.m. within the reaction column, passing from the bottom of the column a fraction containing isophorone to a hydrolysis column also operating at elevated temperature and pressure wherein acetone is separated overhead and returned to the reaction column, removing the fraction containing water, isophorone and high-boiling compounds from the bottom of the hydrolysis column and thereafter recovering the isophorone from the bottom fraction. Whilst the reaction column and the hydrolysis column may be operated as separate columns it is preferred that they are integrated as separate sections within the same column, the rectification section of the column acting as the reaction column and the stripping section of the column acting as the hydrolysis column.
Patent GB-1267629-A (GB)
Title: Pressure-sensitive copying paper
IPC: B41M5/145
Filed: 1970-05-05
Abstract: 1,267,629. Colour-reactive copy sheets. FUJI PHOTO FILM CO. Ltd. 5 May, 1970 [7 May, 1969], No. 21656/70. Heading D2B. In a pressure-sensitive copying sheet of the colour-reactive kind, the colour-former is: where R 1  and R 2  are alkyl groups of up to five carbon atoms. The colour-former is present on one face of a sheet support as a solution in an. oily solvent in microcapsules. The other reagent may be an acid clay, active clay, attapulgite, bentonite or a phenolic resin, and may be on the same side of the support sheet, on the opposite side of the support sheet or on a separate support sheet. This colour-former forms red images and may be used with known yellow or blue colour-formers to form images of other colours, e.g. black.
Patent GB-489071-A (GB)
Title: Improvements in sheet gripper mechanism
IPC: B41F21/05
Filed: 1937-08-07
Abstract: 489,071. Printing machines. HOE & CO., Ltd., R. (Hoe & Co., Inc., R.) Aug. 7, 1937, No. 21803. [Class 100 (ii)] Gripper mechanism -The grippers of the impression cylinder of a rotary printing- machine are constructed so as to reach out beyond the peripheral surface of the cylinder when approaching the front stops 16 of the feed table 15, then move into contact with a sheet, pick it up from the feed board, and transfer it to the surface of the cylinder. The grippers are arranged to have a momentary rest period when gripping the sheet, and to accelerate to the speed of the impression cylinder when conveying the sheet thereto. The gripper members are preferably carried by a sleeve 18 rotatable in end bearings and in an intermediate bearing formed in the walls of a recess in the cylinder. To the sleeve 18 the main gripper support 23 is secured by means of a screw clamp 24, and the sheet is gripped between a pad 29 at the lower end of an abutment arm 27 forming part of the support and the tip 28 of an arm 25 pivoted at 26 to the support and acted upon by a spring 31 tending to close the grippers. The arm 25 is pivoted about an eccentric pin 26 which can be angularly adjusted and held by a nut-and-bolt in adjusted position. Within the sleeve 18 is a shaft 23 formed with a cam groove 36, which when in the position shown in Fig. 3, permits the spring 31 to maintain the grippers closed. The sleeve 18 and the shaft 37 are both rotated by cam mechanism as the cylinder 11 rotates, the sleeve being controlled by segmental gears 41, 42 which are oscillated by a roller 44 and a cam 45 under the control also of a spring-pressed rod 46. The shaft 37 is oscillated by a cam 53 and a roller 52 on a spring-pressed arm attached to the shaft. As the gripper rotates from the delivery position shown in dotted lines in Fig. 1, the gripper is swung outward around the shaft 37 and follows a path indicated by the dot and dash line 59 until the table 15 is reached. The gripper finger 25 moves outwards and takes a path indicated by the dotted line 61 and finally closes on the sheet the operation being the equivalent of a hand which is adapted to reach for a sheet, grip the same with the fingers, and then withdraw the sheet. The gripper remains closed until the printed sheet is transferred to the delivery cylinder 12.
Patent GB-1464399-A (GB)
Title: Fluid flow control valve
IPC: E03D3/06
Filed: 1974-05-06
Abstract: 1464399 Valves E P SCRAGG 6 May 1974 [11 May 1973 4 June 1973] 21892/75 Divided out of 1464398 Heading F2V In a valve for a shower, having a perforated rose 68, an actuating member 80 lifts a valve element 52 to allow pressure to fall within a chamber 34 bounded by a flexible diaphragm 42 which then rises under the influence of water pressure on the lower side thereof. This upward movement causes a surface 48 on a stem 46 to lift from a seat 14.1 to allow water from an inlet 18 to pass through the shower rose 68. After initially lifting the valve element 52 the actuating member 80 then contacts the stem 46 to achieve a positive opening between the surface 48 and the seat 14.1. With the upward movement of the diaphragm 42 water is expelled from the chamber 34. On release of the actuating member 80 the chamber 34 fills slowly through a restricted passageway 30 and the surface 48 re-seats to stop the flow of water through the rose. A pin 62 on the end of the valve element 52 enters the passageway 30 to clean it every time the member 80 is actuated. The stem 46 has ribs 46.1 to provide flow channels.
Patent GB-500489-A (GB)
Title: Improvements in or relating to the manufacture of water-soluble hyposulphites
IPC: C01B17/66
Filed: 1937-08-09
Abstract: 500,489. Purifying hyposulphites. I. G. FARBENINDUSTRIE. AKT.-GES. Aug 9, 1937, No. 21905. Convention date, Aug. 7, 1936. [Class 1 (iii)] Hyposulphite solution prepared by the action of alkali metal amalgam on solutions of bisulphites or sulphurous acid, for instance sodium hyposulphite solution, is, freed from mercury by the action of an adsorbent. Adsorptive carbon, fuller's earth, silica gel, alumina gel and iron oxide gel may be used, or an adsorptive precipitate of, for instance, copper or zinc sulphides, or iron or aluminium hydroxide may be formed in the solution. The hydrated salt may be precipitated by alcohol.