baber/WOPTO huggingface dataset:
Patent GB-424176-A (GB)
Title: Improvements relating to epicyclic variable-speed gearing
IPC: F16H3/66
Filed: 1934-09-29
Abstract: 424,176. Epicyclic variable speed gearing; lubricating toothed gearing. WOLSELEY MOTORS, (1927), Ltd., and BODEN, O., Drews Lane, Ward End, Birmingham. Sept. 29, 1934, No. 27915. [Class 80 (ii)] [See also Group XXXIV] Epicyclic variable-speed gearing of any form has its gear members housed within a closed casing to which oil is supplied under pressure sufficient to maintain a film of oil between the operating surfaces of the intermeshing gear teeth. In the form shown, triple planets 5, 7, 8 are carried in a closed carrier drum 11 and mesh respectively with a sun 4 on a driving-shaft 2, a sun 13 on a driven shaft 3, and a loose sun 14 connected by a sleeve 15 to a clutch drum 16. Pumped oil from a pipe 19 passes in through an aperture 21 in a sleeve 22 and through an opening 23 in the shaft 2 then along a clearance 24 in the tubular shaft 2 and out through a passage 25 which discharges into a space between adjacent teeth of the gear 4. The oil thus passes freely into the revoluble drum 11 containing the gear wheels, accumulating there under pressure, so that these wheels work noiselessly. First and second speeds are effected by applying brakes 12, 17 to the gear drum 11 and to the clutch drum 16, respectively. Third or top speed is effected by engaging a plate clutch 18 which connects the drums 11, 16 together.
Patent GB-1099332-A (GB)
Title: Improvements in or relating to heterocyclic compounds and the manufacture thereof
IPC: C07C279/26
Filed: 1966-06-22
Abstract: Novel compounds of the formula <FORM:1099332/C2/1> wherein R1 represents a hydrogen atom or a C1- 8 alkyl, C2- 8 alkenyl, C2-\ 10 alkoxyalkyl, C3- 10 cycloalkyl, C6- 10 aryl, C7- 14 alkaryl, C7- 12 aralkyl, C8- 14 alkaralkyl, C8- 14 alkoxyaralkyl or C7- 12 haloaralkyl, R2 represents a di-(C1- 8 alkyl)-amino, di - (C2- 8 alkenyl)amino, N - (C1- 8 alkyl) - N - (C2- 8 alkenyl)amino, aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino or morpholino, each of the said heterocyclic radicals having optionally substituted on carbon atoms thereof 1 to 3 C1- 8 alkyl radicals, the nitrogen atom of R2 being the point of attachment of R2 to the ring in said formula; A1 represents a carboxyacyl radical and A2 represents a hydrogen atom or a carboxyacyl radical and acid addition salts thereof are prepared by reacting corresponding compounds in which A1 and A2 represent hydrogen atoms with a carboxylic acid anhydride or carboxylic acid chloride.  The compounds of the invention have hypertensive properties.
Patent GB-1105105-A (GB)
Title: Production of melamine
Filed: 1966-06-23
Abstract: Melamine is prepared by firstly passing urea, with ammonia as a carrier gas through liquid bismuth or a liquid bismutl alloy, e.g. with tin or lead at 300-500 DEG  C. and secondly passing the hot product so obtained through an inorganic synthetic molecular sieve having a pore diameter of at least 10 <\>rA.  The hot pyrolysis products of the first step are preferably passed into a solid bed reactor with fresh, preheated ammonia gas.  The catalyst may be partly decationized.
Patent GB-793202-A (GB)
Title: Improvements in or relating to screen wipers for motor vehicles
IPC: B60S1/28
Filed: 1955-10-04
Abstract: 793,202. Windscreen cleaners. SMITH, T. T. Sept. 14, 1956 [Oct. 4, 1955], No. 28158/55. Class 138(1). An auxiliary screen wiper comprises an auxiliary blade 19 carried by an auxiliary arm 17 which is secured to or formed integrally with the arm 10 of a screen wiper, the auxiliary blade 19 extending at an angle to the arm of the wiper and being adapted to sweep an arc of the screen of greater radius than, but overlapping, that swept by the wiper. As described, the auxiliary arm 17 is secured by a U -clamp 15 to the arm 10 of the wiper, and is gradually bent through an approximate right angle so that the auxiliary blade 19, in one extreme position, lies parallel to and adjacent a side 18 of the screen. In operation, the auxiliary blade sweeps an area of the screen indicated by the lines 21 in Fig. 1.
Patent GB-1122690-A (GB)
Title: Water softening process
IPC: C02F5/08
Filed: 1966-06-23
Abstract: A process for softening water in which a sequestering agent is utilized to soften the water, which agent prevents eventual precipitation of hardness ions, comprises withdrawing a sample of softened water, mixing a measured quantity of a water hardness producing substance with the sample, measuring the residual hardness of the sample and utilizing the measured value to control the addition of the sequestering agent.  The water hardness producing substance may be a soluble Ca or Mg salt, e.g. MgSO4, and may be added already mixed with a colorimetric hardness measuring reagent. The sequestering agent may be the tetrasodium salt of ethylenediaminetetraacetic acid.
Patent GB-282329-A (GB)
Abstract: 282,329. Bicher & Co., Ges., R. J. Dec. 14, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Wall coverings.-Wall coverings are secured to brick walls by coating the walls with a waterproof cement and applying the covering directly on the moist cement without glue or paste. The cement prevents saline excrescence.
Patent GB-283486-A (GB)
Abstract: 283,486. Burroughs Adding Machine Co., (Assignees of Horton, A. A.). Jan. 10, 1927, [Convention date]. Adding and subtracting apparatus; varying functions of machine. - A function-controlling device, such as an add-or-subtract lever, movable from a first to a second position and automatically returned from the latter at the end of the operation of the machine, can be further manipulated when in its second position to disable the automatic returning means. The finger lever 10 is shown in Fig. 1 as in the add position and when moved rearwardly to its subtract position displaces a link 363 to the right where it is held by a. latch 11 pivoted at 12 and co-operating with a stud 14 on the link. In adding operations a pitman 387 controlling the .timing of engagement of the counter is shifted at the commencement of the return stroke of the main shaft 71 by a pin 395 engaging a by-pass pawl 393 carried by the pitman. At the end of the operation a second pin 200 engages an extension of the pitman and so restores it to its normal position. When the lever 10 is set for subtraction the link 363 through a yoke 362, lever 367 and link 406, rocks a pawl 404 on the pitman into the path of pin 200 so that the pitman moves to the right and engages the counter at the beginning of the forward stroke. The lever 367 also depresses a lever 399 to disable the pawl 393 and to bring its end 400 into the path of pin 395 so that the pitman is restored to its normal position at the end of the forward stroke. The latch 11 forms part of a yoke 18, Fig. 6, carrying a pawl 20 extended at 21 to be rocked, at the end of the forward stroke, by pin 395. The pawl 20 normally engages a lateral extension 23 of a second yoke 25 the other arm 26 of which cooperates with the lower end of the lever 10. With the parts in the position shown the action of pin 395 on pawl 20 rocks both yokes and unlatches the link 363. Restoration of the link and the lever 10 is however postponed until the end of the operation of the machine for an arm 35 of the bell-crank 34 on which the lever 10 is mounted meets a known rod 191 now in its rearward position as shown in Fig. 3. At the end of the return stroke this rod moves forward again to free the arm 35 and allow the parts to resume the add position. To prevent this automatic restoration the lever 10 when in the subtract position is depressed to rock the yoke 25 counterclockwise and thus disconnect it from the pawl 20. The pin 395 therefore will merely rock this pawl idly, stretching the spring 27 but not affecting the latch 11. By depression of the error key E the detent bar 223 may be shifted to rock the latch to permit return of the parts to the add position.
Patent GB-1354223-A (GB)
Title: Tamperproof closure assembly and container assembly including  such closure
IPC: B65D51/00
Filed: 1972-06-16
Abstract: 1354223 Tamperproof closure ALUMINUM CO OF AMERICA 16 June 1972 [23 June 1971 27 Oct 1971] 28382/72 Heading B8T A resilient plug 30 is made tamperproof by a metal ring 40 fixed on the container neck and a cover 50 retained over it by outwardly directed lugs 60 formed in the ring. The cover is released by rotating it so that the lugs 60 are flattened by the one or more bosses 70 formed in its skirt 56. With the cover removed the plug 30 may be pierced by a syringe. The ring 40 and cover 50 may be of aluminium or steel, or the cover of plastics.
Patent GB-1481786-A (GB)
Title: Frequency control circuits
IPC: H03L7/085
Filed: 1974-09-13
Abstract: 1481786 APC systems FARNELL INSTRUMENTS Ltd and D C AYRE 13 Sept 1974 [14 June 1973] 28398/73 Heading H3A A frequency control circuit for a controlled oscillator 1 comprises a divider 4 for dividing the output frequency of oscillator 1, a phase comparator 9-11 for comparing the output divider 4 with a reference signal to produce a pulsating signal, an integrator 20, 21 and an arrangement 12, 13 for causing the pulsating signal to assume isolated cyclic groups each comprising a pulse doublet having negative and positive going portions, when synchronization is achieved. In operation, the reference and controlled oscillator outputs after respective divisions at 6; 3, 4 are applied via monostables 8; 4a, 7 to a bi-stable flip-flop 9 to generate early, late signals via NAND gates 10, 11, 14, 15 which are integrated to derive a frequency control signal for oscillator 1. In synchronization, any slight frequency drift causes the pulse widths of the separate portions of the doublet to become unequal as to produce a fine control voltage for VCOI. To prevent oscillator 1 from locking on to a wrong harmonic of reference 5, a circuit (not shown) may be used to inhibit gates 12, 13 till steady state outputs are obtained from gates 10, 11.
Patent GB-1298266-A (GB)
Title: Stabilization of photographic silver halide emulsions
Inventor: KOENIG ANITA VON
IPC: G03C1/34
Filed: 1970-06-12
Abstract: 1298266 Stabilization of photographic silver halide emulsions AGFA-GEVAERT A G 12 June 1970 [13 June 1969] 28490/70 Heading G2C [Also in Division C2] A process for the production of a photographic silver image comprises (a) exposing a material comprising at least one light-sensitive silver halide emulsion layer and (b) developing the layer in the presence of at least one mercapto compound of the formula:- or the thione tautomer thereof, wherein R 1  is an amino group which may be substituted or may be present in the form of a Schiff's base and R 2  is H or halogen. The amino group may be substituted by a substituted or unsubstituted benzylidene or naphthylidene group, or by one or more alkyl, cycloalkyl, aryl or aralkyl groups which may be further substituted. The mercapto compound may be present in the material, e.g. in a silver halide emulsion layer or be added to the developer solution, which may be in the form of a concentrate. The mercapto compounds have a high stabilizing effect without impairing the sensitivity or gradation of the emulsions. Reference has been directed by the Comptroller to Specification 868242.
Patent GB-638105-A (GB)
Title: Improvements in current limiter for electrically driven machine tools
IPC: H02P7/00
Filed: 1947-10-24
Abstract: 638,105. Portable drilling-machines. DUDLEY, F. E. Oct. 24, 1947, No. 28498. Convention date, Oct. 31, 1945. [Class 83 (iii)] [Also in Group XXXVII] A machine-tool driven by an electric motor is provided with a current or torque limiting device comprising means wherein a voltage proportional to the motor current and a constant direct voltage are compared, the motor being de-energized in response to a predetermined difference between the voltages. A machine-tool 10, e.g. driving an expander for use with condenser tubes, is provided with a normally open switch 86 attached thereto, the collar 26 moving to the left, when work is commenced, to close the switch to apply a constant positive potential to the anode of a gas-filled triode 66 through the operating coil of relay 68. When the torque, and hence the current in the motor, exceeds a pre-arranged amount, the positive voltage peaks produced in the secondary winding 42 exceed the constant reference voltage, determined by a potentiometer 46, causing the valve 58 to conduct, thus driving the grid of the valve 66 positive so that it conducts continuously to operate relay 68 to de-energize the motor. Initial retraction of the machine-tool 10 allows the collar 26 to move to the right to open switch 86, thus re-energizing the motor, reversing means being included with the tool so that during retraction the tool rotates in the reverse direction. The value of torque at which the motor is de-energized is adjustable by means of the potentiometer 46, and the effect of transient conditions in the motor current is obviated by the filter circuit 62, 64. To maintain the same operating characteristics should the valve 66 be renewed a testing arrangement is provided by moving a switch 50 to its lower position to allow a prearranged current to flow through the valve 58, determined by the resistor 80, so that the bias on the grid of the valve 66 assumes a standard value, the resistor 72 then being adjusted until the relay 68 just operates. A more positive indication of the relay operation is assured by the use of a capacitor 78 which alternately charges and then discharges through the relay operating coil when the valve 66 conducts, thus giving the relay a vibratory movement. The system may operate with either A.C. or D.C.
Patent GB-757100-A (GB)
Title: Improvements in focussing means for cathode ray tubes
Inventor: BAKER GEOFFREY BERNARD
IPC: H01J29/68
Filed: 1953-10-15
Abstract: 757,100. Cathode-ray tubes. MURPHY RADIO, Ltd. Oct. 15, 1954 [Oct. 15, 1953]. No. 28527/53. Class 39 (1). The magnetic field of a C.R.T. is produced by a number of hollow permanent magnets 1, 2, 3 united by pole pieces 4, 5 and spaced around the neck, and the working field is varied by varying the reluctance of the space within the magnets, e.g. by means of steel slugs 7 held friction tight within the bores 6. The cores 7 are preferably united by a non-magnetic annulus 8. Individual cores may be fixed or omitted.
Patent GB-1039960-A (GB)
Title: Process for the bleaching of clay
IPC: C04B33/04
Filed: 1965-07-06
Abstract: Clay is bleached by treating an aqueous suspension thereof with a water-soluble sulphite, bisulphite or disulphite and/or SO2 or H2SO3, adding an alkali metal borohydride and adjusting the pH to 2.5-4. 1.5-10 mols. of SO3- - or HSO3 - ions, or 0.75-5 mols. of S2O5- - ions, may be added per mol. of BH4- ion.  10-2000 ppm. of BH4-, referred to the dry weight of the clay, may be added and the pH adjusted by the addition of a non-oxidizing acid, e.g. dilute H2SO4. The bleaching may take place at 30-80 DEG  C.  The clay, which may be kaolin, bentonite or montmorillonite, may be pre-cleaned, e.g. by normal elutriating.  Sodium borohydride may be used as the solid, but preferably as the aqueous solution.
Patent GB-451469-A (GB)
Title: Improvements in or relating to the supporting surfaces of aeroplanes
IPC: B64C5/08
Filed: 1935-10-16
Abstract: 451,469. Controlling aircraft. LUMIERE, H., 96, Cours Albert Thomas, Lyons, France. Oct. 16, 1935, No. 28625. Convention date, Jan. 19. [Class 4] Each wing of an aeroplane is provided with a flap or flaps 3 mounted on the upper and/or under wing-surface and each hinged on a longitudinal axis, the flap or flaps on one wing being symmetrically arranged relatively to the flap or flaps on the opposite wing so that when the flaps are brought simultaneously to the operative position perpendicular to the wing surfaces thev canalize the air between themselves or between the sides of the fuselage and themselves to increase the supporting power of the aeroplane. As shown, the flaps 3, which normally are flush with the wings 1, co-operate with flaps or ailerons &c. 5 hinged on axes at right-angles to the axes of the flaps 3, the flaps 3, 5 being operated by the same or different mechanism. In a modification, a single flap 5 extends between the flaps 3.
Patent GB-512292-A (GB)
Title: Process for the manufacture of glass
IPC: B29C65/48
Filed: 1938-10-03
Abstract: 512,292. Glass manufacture. VEREINIGTE GLUHLAMPEN UND ELEKTRIZITATS AKT.- GES. Oct. 3, 1938, No. 28655. Convention date, Oct. 2, 1937. [Class 56] A method of facilitating the melting of glass batches, particularly those which are fusible with difficulty, consists in precipitating some or all of the constituents together from solution instead of mixing them as powders. The method can be used for making glass composed of Si O2, Al2 O3, and B2 O3, such as 64 per cent. of Si O2, 8 per cent of Al2 O3, and 28 per cent. of B2 O3, or a glass containing 83 per cent. Si O2, 4.5 per cent. Al2 O3, and 12 per cent. B2 O3. The silica is preferably precipitated from the aqueous solution of a silicon compound, e.g., waterglass, and aluminium hydroxide is precipitated together with the colloidal silica by introducing a suitable aluminium compound into the waterglass. The gel mixture is washed and filtered, and a calculated quantity of boric acid, dissolved in water, is stirred in with the: gel and then evaporated to dryness. Other constituents, such as alkalies, can be added also to the gel mixture. The,dried gels may be voluminous, and in this case the mixture may be compressed by mechanical means to reduce occluded air. Preferably the mixture is kept below the sintering temperature for some time to allow absorbed water to escape.
Patent GB-466005-A (GB)
Title: Improvements in and relating to gas purifiers
IPC: C10K1/22
Filed: 1936-10-22
Abstract: 466,005. Gas purifiers.. TRIGGS, W. W. (Dortmunder Bruckenbau C. H. Jucho) Oct. 22, 1936, No. 28708. [Class 55 (ii)] Gas purifier towers are made up of superposed baskets K each having two layers of material and pockets G<1>, G<2>, at opposite points on the inside wall which form vertical inflow and outflow gas conduits by the assembly of the baskets. Gas enters by a number of inlets E and passing through slots O in the lower part of the baskets, flows between and penetrates the two layers being withdrawn through slots O<1> and outlets A. Packing material is provided at the junctions D, B of adjacent baskets and pockets respectively. Instead of the pockets, gas pipes may be attached to the individual baskets at each side and communicating through a liquid seal with branches from a vertical gas supply pipe and to a delivery pipe.
Patent GB-261743-A (GB)
Title: Improvements in refrigerating apparatus of the absorption type
IPC: F25B15/10
Filed: 1926-11-15
Abstract: 261,743. Electrolux, Ltd., (Assignees of Platen, B. C. von, and Munters, C. G.). Nov. 21, 1925, [Convention date]. Refrigerating, absorption apparatus for. - A series of inclined pockets for liquid are arranged in the generator or in the conduit between the absorber and the generator of a continuous-cycle system operated by heat, so that the evolution of bubbles of refrigerant vapour from the liquor in the pockets produces a continuous flow of liquor towards the top of the generator. The invention is described as applied to a system wherein an inert gas such as hydrogen is present in the absorber 18, Fig. 1, and the evaporator 16, to equalize the pressure throughout. The pockets may be formed in the generator 10 by superposed thin pressed steel cones 22 spaced apart by marginal flanges fitted tightly within the wall of the generator. The cones have openings 23 at their apices so as to form a central continuous passage, and the pockets and the generator itself are heated by a surrounding electric heating element 11. Openings may be provided in the walls of the cones near their bases to facilitate flow of liquid. The liquid present in the lower pockets when the apparatus is idle is forced into upper pockets as soon as heat is applied, and eventually the whole generator is filled, the weak liquor being returned from the upper part to the absorber through a pipe 26, 19, which may be formed into an interchanger with the strong liquor pipe 21. A baffle 28 is arranged in the gas space of the generator to prevent flow of liquid particles to the condenser 14. The generator and interchanger may be surrounded by insulation 29. The cones may be arranged within an enlargement of the pipe 21 inside the generator, the heating element being arranged around such enlargement and the pipe continued up to the top of the generator. In a modification, a rectangular-sectioned casting 35, Fig. 4, is fitted horizontally in the pipe 39, 40 conveying liquid from the absorber 18, and is provided with inclined baffles 37 forming the pockets, from which a flow of liquid is induced along the space 38 above them. The casting 35 is ar. ranged below the generator 19, both being heated by a gas burner 41.
Patent GB-1501919-A (GB)
Title: Apparatus and method for emplacing a conduit along an underground arcuate path
IPC: E21B21/00
Filed: 1975-07-11
Abstract: 1501919 Laying pipes TIDRIL CORP 11 July 1975 [19 July 1974] 28923/75 Heading F2P [Also in Divisions E1 and H2] A method of laying a production casing comprises drilling an arcuate path with a pilot drill, leaving the drill string 10 in place, attaching a reamer 30 to the string and the casing 32 to the reamer. The assembly is pushed into the hole, the reamer enlarging the hole to explore the casing. Drilling mud may be passed either through the string or along the casing and exit as a lubricant to the casing or in a return channel therein and the easing may be weighted to be of zero buoyancy in the mud. Pipes may also be floated into the casing.
Patent GB-1180894-A (GB)
Title: Atom Probe Field Ion Microscope.
IPC: H01J49/30
Filed: 1968-06-18
Abstract: 1,180,894. Ion beam tubes. NATIONAL RESEARCH DEVELOPMENT CORP. 18 June, 1968 [20 June, 1967], No. 28944/68. Heading HID. In a field ion microscope an ion beam corresponding to a particular atom of the specimen 12 is selected by pairs of deflection plates 18 to pass through an aperture in the image screen 16 for subsequent analysis in a mass spectrometer 25. Additional deflection plates may be provided to ensure normal incidence of the selected ion beam on the aperture. The imaging gas is preferably helium at a pressure of a few microns with the electrical field applied to the specimen 12 then slowly increased, the flux of helium ions detected at 28 suddenly ceases when the selected atom is field desorbed or evaporated. The selected. atom then leaves the specimen site as an ion which passes through the aperture in the image screen for analysis in the mass spectrometer and detection at 30 or 32. The detectors 28, 30 and 32 are adjustable in position. The helium gas may alternatively, or in addition, be recorded by virtue of the beam of neutral atoms which passes through the aperture. In a modification (Fig. 3), the detector section of the mass spectrometer comprises a venetianblind type electron multiplier and output display screen. In a further modification (Fig. 4), the deflection plates are dispensed with and the microscope section 10 (50) includes a bellows device (52) which may be used to tilt the specimen and an associated ring electrode (56) in any desired direction, the tilting motion being restrained by a spherical joint (54). The microscope is associated in this modification with a time-of-flight mass spectrometer (64). The helium supply may be interrupted before the field desorption process is initiated, e.g. by applying a voltage pulse to the specimen or to the associated ring electrode. During adjustment of the image the gas pressure may be maintained by either, closing off the pumping system or operating in a dynamic gas mode with the ring electrode associated with the specimen having a small orifice such that the gas pressure is higher in the vicinity of the specimen than in the rest of the instrument. The size of the aperture in the image screen may be adjusted by utilizing an array or revolving plate of various size holes or an iris type variable aperture. The aperture may also be of oblong shape.