baber/WOPTO huggingface dataset:
Patent GB-1072138-A (GB)
Title: Electrometer circuit arrangement with non-linear capacitors
IPC: G01R19/18
Filed: 1964-10-28
Abstract: 1,072,138. D.C. voltage measurement. CESKOSLOVENSK‡ AKADEMIE VED. Oct. 28, 1964 [Nov. 8, 1963; May 14, 1964], No. 43954/64. Heading G1U. [Also in Division H3] In an electrometer type direct voltage measuring circuit the voltage to be measured at input 7 is connected via a low pass filter 8 to a non linear capacitor 1 which is connected via a linear capacitor 2 to a high frequency source 4. This source heats the dielectric of the non linear capacitor and maintains it by equilibrium between dielectric losses and heat dissipation into ambient space at temperatures immediately above the Curie temperature, where the dielectric shows the highest electric non linearities. The non linear dielectric element is connected through a coupling capacitor 3 with a rectifying network 9, the output of which is connected via a second low pass filter 10 with output terminals 111. An adjustable D. C. voltage source 6 is connected in series with the input signal and the element 1, and is adjusted to the value where the mean impedance of the non linear dielectric is little effected by temperature changes. The D. C. to be measured controls the impedance of the non linear capacitor 1, so that the proportion of the A. C. from the source 4 tapped off at the junction between the capacitors 1 and 2 depends on this D. C. This proportion is rectified and passed to the output terminal, where it may be measured by the meter 12. It may be backed off against an adjustable D. C. derived from a unit 13 energized from the same A. C. supply 4. Arrangements are described for providing positive and negative feedback in the system.
Patent GB-1526225-A (GB)
Title: Fastener having a new driving recess
IPC: F16B23/00
Filed: 1976-10-26
Abstract: 1526225 Screw heads GKN FASTENERS Ltd 26 Oct 1976 [29 Oct 1975] 44524/75 Heading F2H A screw has a driving recess with three or more generally radial driving faces 13, each face having a plurality of grooves 17 between which are defined ridges 15, the grooves and ridges extending substantially parallel to the longitudinal axis of the screw from the mouth of the recess towards a base region thereof. Preferably the back-out driving faces 14 have similar grooves and ridges. The grooves and ridges have an arcuate cross-section in a plane normal to the screw axis, and are formed to lie outside notional planes 11a marking the walls of known smooth-sided recesses, so that a standard screwdriver can be used with the driving recess of the present invention. In the cruciform recess shown, the base 11 of each wing of the recess slopes inwards from the mouth of the recess to a central well 10, the grooves and recesses reaching to the base 11. The width of each wing may taper slightly towards the base.
Patent GB-1340505-A (GB)
Title: Treatment of aluminium-containing waste solutions
IPC: C02F1/58
Filed: 1970-12-21
Abstract: 1340505 Treating waste liquors LANCY LABORATORIES Inc 21 Dec 1970 [3 Feb 1970] 44942/70 Heading C1C In a process for modifying an aluminium workpiece comprising treating the workpiece with alkaline treatment solution and/or acid treatment solution and washing the workpiece after the or each treatment to produce used washing solution(s) containing alkaline or acid drag-out, the used washing solution(s) is (are) reconditioned by precipitating aluminium hydroxide therefrom. The used washing solutions may be mixed prior to or during reconditioning. The precipitate may be removed periodically or continuously. The reconditioned washing solutions containing aluminium hydroxide may be heated to aid settling of the aluminium hydroxide. In one embodiment the washing solution containing alkaline drag-out is reduced to a pH of 6 or less by mineral acid and mixed with washing solution containing acid drag-out, and alkaline earth metal hydroxide is added thereto to increase the pH to at least 4À7 and to precipitate aluminium hydroxide. In another embodiment the washing solution containing alkaline drag-out is mixed with washing solution containing acid drag-out, additional acid, if necessary, is added to reduce the pH to 6 or less, and alkali is added to precipitate aluminium hydroxide. In the Figure the workpiece 9 is etched in a caustic solution, washed, rinsed, anodized in sulphuric acid, washed and rinsed. The alkaline solution from wash zone 11 is treated in zone 13 with sulphuric acid to reduce its pH to 6 or less and mixed with acidic solution from wash zone 27 and calcium hydroxide in zone 18. The resultant mixture containing precipitated aluminium hydroxide has a pH of at least 4À7. The mixture is heated by steam coil 33a. Precipitate is settled out in zone 34 and reconditioned liquid is returned to wash zones 11 and 27.
Patent GB-1412246-A (GB)
Title: Computer control arrangements
IPC: G06F19/00
Filed: 1971-09-29
Abstract: 1412246 Digital computers KENT AUTOMATION SYSTEMS Ltd 28 Sept 1972 [29 Sept 1971] 45430/71 Heading G4A An electric circuit module 10 enables control to be switched between two digital computers 40, 41. The two computers 40, 41 control a chemical plant or a traffic system, computer 40 normally being dedicated to this plant and computer 41 non-dedicated (e.g. performing some other program) the latter replacing computer 40 when it becomes erroneous. A disc or drum store 46 holds a duplicate of the process control program, and continuously stores the operating data, from computer 40. Errors in the computer 40 are detected by watchdog unit 45 which activates module 10 (Fig. 2, not shown) to transfer control to computer 41, which computer uses a program from ROM 48 to load the program and operating data from the disc store. At the same time power is cut off to the operator panel on computer 41 to prevent the operator interfering. Delay circuitry is provided to prevent control being switched in the case of a transient error. When the error has been corrected the control is switched back to computer 40 by manually running a program therein to obtain the program and data from disc store 46. In another embodiment (Fig. 3, not shown) the computer 41 will remain in control even after the error in computer 40 has been corrected, control returning to the latter only after an error in the former.
Patent GB-1376764-A (GB)
Title: Inboard spreader blade actuating mechanism for bowl type earth moving apparatus
IPC: E02F3/64
Filed: 1972-10-04
Abstract: 1376764 Earth moving bowl type scrapers CLARK EQUIPMENT CO 4 Oct 1972 [4 Oct 1971] 45673/72 Heading E1F In a bowl type earth scraper, in which an earth receiving bowl, provided with a main blade 18, has a door 27 retractable on rollers 28 beneath a fixed floor portion 26 to provide an earth dumping opening a spreader blade 32 is pivotally mounted at 34 to the door 27 and has side plates 35 which, when the door is closed, engage beneath blocks 40 secured on the inside of bowl side walls 25; the plates 35 sliding out of engagement with the blocks 40 as the door is retracted, allowing the blade 32 to pivot downwards (shown dotted in Fig. 2) for spreading and levelling dumped earth. The blocks 40 have lower sections 42 which can be replaced when worn, and are of a length to prevent pivoting of the blade 32 until the support structure 19 of the main blade 18 has been cleaned.
Patent GB-1116050-A (GB)
Title: Improvements in and relating to ventilators
IPC: F04D25/12
Filed: 1965-10-29
Abstract: 1,116,050. Ventilators. R. W. SIMON. 27 Jan., 1967 [29 Oct., 1965], No. 45849/65. Heading F4V. A self-driven rotary type ventilator comprises a rotor 11 mounted-at each end of its spindle 10-in bearings in spiders 8, 13 fixed to the casing portion 1, an apertured circular plate 16 and an apertured disc 19 mounted inside the plate 16 forming means for regulating the air flow, and a weather guard 25. Cords are provided to move the disc 19 from its open to closed position and the various parts of the ventilator may be made of a synthetic plastic. A spacing ring may be provided when the space between the panes of double-glazing is substantial to add a degree of sound insulation.
Patent GB-1510765-A (GB)
Title: Piperidine derivatives of indole
IPC: C07D401/06
Filed: 1976-11-04
Abstract: 1510765 Piperidinoalkylindoles BOEHRINGER MANNHEIM GmbH 4 Nov 1976 [7 Nov 1975] 45918/76 Heading C2C The invention comprises compounds of formula and their pharmacologically compatible salts, wherein R 1 , R 2  and R 3  are each H or C 1-6  alkyl, or R 3  may be halogen or C 1-6  alkoxy, and X is C 2  or C 3  alkylene. In examples, these compounds are prepared by either reacting a 3-bromoalkyl- or toxyloxyalkylindole with a 4-phenoxymethylpiperidine or introducing R 1  = alkyl. Therapeutic compositions having antihypertensive activity comprise compounds of the above formula, and may be administered orally or parenterally.
Patent GB-1482522-A (GB)
Title: Exposing scanners for image reproduction
IPC: H04N1/40
Filed: 1973-10-02
Abstract: 1482522 Facsimile CROSFIELD ELECTRONICS Ltd 19 Sept 1974 [2 Oct 1973] 45989/73 Heading H4F A facsimile exposing scanner includes a row of light sources 8, Fig. 1, illuminating side-byside areas of a record medium 4 and includes control signal generating means connected to receive a common image representing signal and controlling discretely the intensities of light from the sources at the surface of medium 4. The light forms a strip spanning a single scan line on the record medium, so that half tone image dots may be formed during the scanning motion. The light emitting diodes 8 are operable at a plurality of discrete energy levels allowing an intensity profile, across a dot, of the form shown in Fig. 3(c). This is achieved by the inclusion of at least one gradation circuit 13 having an input/output characteristic of the form shown in Fig. 4. A common image representing signal is compared for each diode 8 with a screen signal from a screen pattern generator 14. If the ratio between these signals exceeds a first predetermined value the diode is energized to a first low level. One or more graded versions of the common signal are also compared with the screen signal appropriate to the diode and if this ratio exceeds a second or subsequent predetermined value the diode is further energized to a second or subsequent higher level. In this manner the degree of etching control is improved.
Patent GB-1413032-A (GB)
Title: Aqueous crystallization of sylitol
IPC: C07H1/08
Filed: 1973-10-03
Abstract: 1413032 Separating xylitol from xylose SUOMEN SOKERI OSAKEYHTIO 3 Oct 1973 [10 Oct 1972] 46113/73 Heading C2C Crystalline xylitol containing at most 0À1% xylose is prepared by fractionally crystallizing xylitol from an aqueous solution containing 50- 75% xylitol, 20-45% water and less than 5% xylose by cooling to below 15‹C. The starting material is obtained by hydrogenating xylose.
Patent GB-1359996-A (GB)
Title: Acoustic or thermal insulation material
IPC: E04B1/74
Filed: 1971-09-23
Abstract: 1359996 Modifying acoustic properties BPB INDUSTRIES Ltd 23 Sept 1971 [29 Sept 1970] 46365/70 Heading G5X [Also in Division B5] An acoustic and thermal insulation material comprises two facing sheets of paper, at least one of which (preferably both) is perforated, and a filling of shredded paper, the facing sheets being secured to one another along the longitudinal edges of the material and means being provided to retain the shredded paper between the sheets. The facing sheets may be interconnected at intervals to form a quilted structure by means of rows of staples or bands of adhesive, or the shreds may themselves be bonded. The paper of the sheets and shreds may be immersed in or sprayed with an aqueous solution of ammonium dihydrogen phosphate or ammonium sulphate as a fire retardant and may also be impregnated with a mould growth inhibitor. The sheets are usually perforated over 1-30% of their area by spiking and the shreds are normally less than 5 mm. wide. The insulation material is used for lining walls, as an infill for plasterboard or to increase the sound absorption of a hollow panel of wood or metal studded with plasterboard on both sides.
Patent GB-1194186-A (GB)
Title: Picture Frames.
Inventor: BLENNERHASSETT JOHN GERARD
IPC: A47G1/06
Filed: 1966-10-18
Abstract: 1,194,186. Picture frames. J. G. BLENNERHASSETT. 17 Aug., 1967 [18 Oct., 1966], No. 46492/66. Heading A4X. A picture frame comprises a U-shaped first component 1, 2, 3 of channel section secured to a backing plate (5) and a second component 4 also of channel section which is secured to the backing plate by a band of impact adhesive (9) after a photograph and a front transparent sheet have been slid into the U-shaped first component. The adhesive (9) is covered by a removable strip of waxed paper (10).
Patent GB-1475666-A (GB)
Title: Method for reducing molybdenum trioxide content of gases issuing from reactors containing molybdenum based catalysts
IPC: C07C45/35
Filed: 1975-11-11
Abstract: 1475666 Removing molybdenum trioxide from reaction gases CELANESE CORP 11 Nov 1975 [12 Nov 1974] 46528/75 Heading C2C A process for reducing the molybdenum trioxide content of a gas issuing from a reaction zone containing a molybdenum based catalyst comprises (a) passing a gas through the reaction zone which is maintained at an elevated temperature and which contains a solid catalyst comprising molybdenum trioxide or a molybdenum compound which is a source of molybdenum trioxide under the conditions obtained within said reaction zone, and (b) introducing gas issuing from the reaction zone into a subsequent processing step or zone, and wherein the gas issuing from the reaction zone is cooled, prior to introducing it into the subsequent pro-  cessing step or zone, by passing it through a cooled bed or array of solid bodies which are chemically inert toward the gas, the bed or array having an effective void space greater than 40%; and condensing vapors of molybdenum trioxide contained in the gas, as a result of vaporization of molybdenum trioxide from the reaction zone catalyst, upon the surfaces of the solid bodies, thereby to diminish the molybdenum trioxide content of the gas prior to its entry into the subsequent processing step or zone. Preferably the void space is at least 50%. Preferred solid bodies are ceramic balls of 15-100 mm. diameter packed inside heat-exchanger tubes with the ratio of the ball diameter to the inside diameter of the tubes is 0À4-0À7, e.g. 13 mm balls in 22 mm. tubes. Other suitable solid bodies include metal vanes or rods or a wire brush array. A moving bed of ceramic spheres precooled in a separate zone is also referred to. The cooling bed may be followed by a separate dust-trapping bed of similar type. The process may be applied to the oxidation of propylene or isobutylene to aerolein or methacrolein with or without further oxidation to acrylic or methacrylic acid, or to the ammoxidation of propylene to acrylonitrile.
Patent GB-1527940-A (GB)
Title: Removal of metallic contaminants from bituminous material
IPC: C10C1/00
Filed: 1977-11-01
Abstract: 1527940 Removing metallic contaminants from bituminous materials COAL INDUSTRY (PATENTS) Ltd 1 Nov 1977 [9 Nov 1976] 46552/76 Heading C5E Bituminous material is formed into a dispersion with a solution containing a complexing agent for the metallic contaminant and the bituminous material of reduced metal content is thereafter separated from the solution containing dissolved complex of the metal. The complexing agent can be ammonia, sodium hydroxide, potassium hydroxide or ethylene diamine and can be used in aqueous solution. The process can be used to remove zinc from coal tar pitch or coal tar to be used to produce pitch binder for carbon electrodes.
Patent GB-1202756-A (GB)
Title: Electrical equipment case
Inventor: STONE DENNIS
IPC: H05K11/02
Filed: 1968-10-02
Abstract: 1,202,756. Electrical equipment housings. STANDARD TELEPHONES & CABLES Ltd. 2 Oct., 1968, No. 46707/68. Heading H1R. [Also in Division H3] A case for electrical equipment comprises two cover sections which co-operate to form a shell with one opening which is closed by a control panel of the equipment: the control panel has a re-entrant surface region having apertures to allow control operating means to protrude through the panel while remaining within the outline of the case. An embodiment for a car radio comprises a base portion 11 in the form of a tray with upturned edges and a cover 10 comprising a top and three sides which is attached to the base portion by means of screws 16 which engage threaded brushes 23. Chassis 20 is held between cover 10 and the base portion 11 by means of the screws 16 which pass through apertures in lugs 22 attached to the chassis 20. The controls are fixed to the front panel 21 of the chassis, being held in slots therein by means of keeper plates (Fig. 4, not shown). Attached to the front of the chassis 20 by means of screws 24 is the control panel 12, which has apertures 24 through which the control knobs 13, 14 partially protrude; the knobs are a sliding fit on their shafts, being held in position by the panel 12. The arrangement is sealed against dust by means of rubber mouldings 27, 29, 32 attached to the base-plate, which may be formed of rubber or a rubber substitute, or comprise a metal plate partly shrouded in rubber or rubber substitute.
Patent GB-974124-A (GB)
Title: Surface active hydroxy sulphates and sulphonates esterified with a carboxylic acid
IPC: C07C309/11
Filed: 1961-12-29
Abstract: Surface active compounds of the general formula R.CO.O.R1Ox.SO3Me in which X=0 or 1; R is an alkyl group of formula <FORM:0974124/C1/1> where R1, R2 are alkyl groups and R3 is H or an alkyl group (preferably R1+R2+R3= C4-C19); Me is a monovalent cation e.g. H+Na+K+NH4+ and cations derived from organic nitrogen bases or the equivalent polyvalent cation e.g. 1/2 Mg2+; R1 is a radical selected from:-(1) groups [CH2-CH2-O]n-CH2-CH2- where n= 0, 1, 2 (2) alkylene groups <FORM:0974124/C1/2> having at least 3 carbon atoms where R11=alkylene group having at least 2 carbon atoms, the Ox.SO3Me being attached to R11 or (3) a group as defined under (2) substituted with one or more hydroaryl groups. The calcium salts are relatively soluble so the compounds may be used in combination with hard water and in combination with other surface-active compounds, e.g. alkali pyro phosphates or polyphosphates, silicates, carbonates, sulphates, borates, sodium carboxymethyl cellulose and other soluble derivations of cellulose or starch; bleaching agents e.g. persulphates, perborate, percarbonates; optic bleaching agents; foampromolins and foam stabilizers.  In examples (1) two separate solutions each containing 0.5 g 1-1 of hydroxypropyl ester sulphonates of C15-C19 carboxylic acids is added (1) 0.05% Na2 SO4; and (2) 0.8% sodium pyrophosphate +0.7% Na2SO4 100ml portions of each solution are shaken to foam and then "titrated" at 45 DEG C. with a solution of neutral tallow, flour, sodium chloride and distilled water to determine their foaming power number (defined) (2) as in Example 1 using ethyl ester sulphonate sodium salt of C15-C19 acids.  Thermal stability of the compound is also determined (3) The foaming power number of the glycerol ester sulphates of C14-C20 carboxylic acids is determined and the wetting power number determined in the manner described.  In Examples 9, 10, 11 the foaming power number of unbuilt and heavily built compositions are determined as is the thermal stability and clear point i.e. the temperature at which a 21% solution of the compound is water previously cooled to -8 DEG C. becomes clear upon subsequent heating.  Specifications 825,805, 871,278, 913,041 and 936,808 are referred to.
Patent GB-986316-A (GB)
Title: Roof support assembly suitable for use in mines
Inventor: POTTS MICHAEL CHARLES
IPC: E21D23/00
Filed: 1962-12-11
Abstract: 986,316. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. Dec. 10, 1963 [Dec. 11, 1962], No. 46760/62. Heading E1E. In a method of advancing either or both of two roof supports 1, 2 towards a conveyer 3, a fluid-pressure jack 8 pivoted to the conveyer carries a pulley 9 engaging a rope or chain 6 passing around guide pulleys 7 and fastened to the movable supports 1, 2. Each support comprises a floor bar 4 carrying three hydraulic props 5 supporting a roof bar (not shown).
Patent GB-1277223-A (GB)
Title: Improvements in spot-type disc brakes
Inventor: RATH HEINRICH BERNHARD
IPC: F16D65/095
Filed: 1969-09-25
Abstract: 1277223 Spot-type disc brakes GIRLING Ltd 6 Oct 1970 [25 Sept 1969] 47135/69 Heading F2E A spot type disc brake comprises a fixed caliper 10 straddling a disc 17 and including hydraulically actuated pistons 20, 21 which in use urge pad assemblies 24, 25 against opposite faces of the disc 17, and the backing plate e.g. 22 of each assembly e.g. 24 is provided with circumferentially inwardly facing surfaces 32, 33 for co-operation with complementary circumferentially outwardly facing abutment surfaces 34, 35 on the caliper 10 whereby in actuation of the brake and with the disc 17 rotating in the direction of arrow 41 the drag forces acting along the line 36 are taken at the leading side of the pad assemblies 24, 25 on the left hand side of Fig. 2, the surface 34 being disposed radially outwardly of the line 36 and the surface 35 being disposed radially inwardly thereof. When the disc 17 is rotating in the opposite direction the drag forces are taken also at the leading side of the pad assemblies 24, 25 which is now at the right hand side of Fig. 2. The surfaces 32, 33 are formed on T-shaped edge portions 31 of the backing plates 22 or 23 and the surfaces 34, 35 are formed respectively on a bridge part 11 of the caliper 10 and on caliper members 12 or 13, the two caliper members 12, 13 being bolted together. The arrangement is said to reduce brake squeal. As shown in Figs. 1, 2, 3 the pad assemblies e.g. 24 is radially located by means of abutment surfaces 38, 39 on the caliper 10 which cooperate with the ends of the T-shaped portions 31 but as seen in Figs. 5, 6 the pad assemblies 24<SP>1</SP>, 25<SP>1</SP> are radially located by means of central projections 42 on pistons 20 or 21 which project into central apertures 43 formed in the backing plates 22, 23. As shown there is a single piston 20, 21 on each side of the disc 17 which pistons are movable in blind bores 18, 19 in the caliper 10 which bores 18, 19 are interconnected by a passage 28 through the bridge part 11. A bleeder orifice 29 is connected to passage 28 and a brake fluid inlet (30) is connected to the bore 18. It is also possible to provide two pistons side by side on each side of the disc such that both pistons on either side act on a common pad assembly.