baber/WOPTO huggingface dataset:
Patent GB-884975-A (GB)
Title: Improvements in or relating to aquasols
Inventor: ALEXANDER GUY B
IPC: B01J13/00
Filed: 1960-07-05
Abstract: Thoria aquasols containing at least 50% by weight of thorium dioxide in the form of particles having average diameters from 10 to 100 millimicrons, and stabilized with a monovalent acid to a pH of 2 to 5, are prepared by adding a soluble thorium salt and an anion exchange resin to a heated colloidal solution of thorium hydroxide seed particles.  The initial sol is obtained by adding anion exchange resin to a solution of thorium salt, and then a solution of thorium salt is added at a rate not exceeding 1 millimole of salt per hour per 10 square meters of colloidal thoria surface area in the sol, together with an anion exchange resin at a rate to maintain the pH between 2 and 5, the temperature being above 80 DEG  C. and electrolyte level below 0,2 molar, the additions being continued until the colloidal thoria particles have grown to 10 to 100 millimicrons.  The sol may be concentrated by evaporation, anion exchange resin being added to maintain the pH between 2 and 5. Examples are given. Specifications 569,899, 609,216, 654,706, 679,850, 679,851, 679,852, 679,853, 714,366, 718,309, 721,979 and 730,757 are referred to.
Patent GB-810231-A (GB)
Title: Improvements in or relating to methods of sealing anodic aluminium oxide coatings
Inventor: SPOONER ROY COWIESON
IPC: C25D11/24
Filed: 1956-07-30
Abstract: 810,231. Sealing anodized aluminium. ALUMINIUM LABORATORIES Ltd. July 11, 1957 [July 30, 1956], No. 23527/56. Class 41. Anodically oxidized coatings formed on aluminium or aluminium-base alloys are sealed by immersion in an aqueous bath containing an alkali metal and/or ammonium molybdate at pH 5.8 to 8 and a temperature above 90‹ C. The Provisional Specification refers also to a sealing treatment with an alkali metal tungstate solution at a temperature above 90‹ C.
Patent GB-532078-A (GB)
Title: Improvements in sockets or holders for electrical lamps
IPC: H01R33/955
Filed: 1939-08-16
Abstract: 532,078. Two-part couplings. VORONIN, P. S: Aug. 16, 1939, No. 23623. [Class 38 (i)] A holder for a multi-filament electric lamp bulb comprises a socket rotatable relatively to a fixed base to operate a multiple switch by which the filaments of the bulb may be variably connected to the current supply. The bulb 1 has filaments 2, 3 which are connected to three contacts 5 in its base, and the bulb fits into a socket 7 provided with three spring contacts 6 which engage the contacts 5. The socket 7, which is of the kind described in Specification 397,687, [Group XI], has a rotatable base part 13 that fits into a second socket 9 provided with two spring contacts 14, 15 to which the current leads 16 are connected. The base 13 has a pair of contacts 10 which prevent a connection between the contacts 14, 15 and three contact plates 12 electrically connected to the contacts 6. Rotation of the socket 7 relatively to its base 13 provides a variable connection between the leads 16 and two of the three contacts 12, as described in the Specification referred to. The socket 9 is attached to a tube 23 secured to a base 24, and the socket 7 is attached by screws 21 to a tube 22 that encloses, and is rotatable relatively to, the tube 23. Thus the filaments 2, 3 may be, variably connected by turning the tube 22 relatively to the base 24. In a modification, the part 13 is attached directly to the tube 23.
Patent GB-1022066-A (GB)
Title: Recovery of values from pickling liquor
IPC: C01G37/02
Filed: 1963-06-13
Abstract: Acidic aqueous nitric acid pickling liquor is treated to recover F, Cr, Fe, Ni and NO3 values by (1) adding a soluble nitrate to precipitate and remove an insoluble fluoride (SiO2 may first be added, and a silicofluoride is then formed); (2) ammoniating the solution (with gaseous or aqueous NH3), e.g. to a pH of 7, to precipitate and remove Cr(OH)3 and Fe(OH)3, and to form NH4NO3 from the HNO3 present; (3) optionally adding KCl to the solution to form KNO3 and NH4Cl from the NH4NO3 and preferably heating to 82 DEG  C.; (4) adding a soluble reagent capable of forming an insoluble Ni compound, preferably (NH4)2S to precipitate NiS; and (5) evaporating the solution to crystallize out the nitrate (95-98% KNO3 if step (3) is included), e.g. by heating to 114 DEG  C. at atmospheric pressure and cooling rapidly to 25 DEG  C.  The KNO3 may be used in (1).  The remaining solution may be ammoniated to bring down traces of metals, and then evaporated to give mixed crystals of KNO3 and NH4Cl.  Trace F may be removed by adding a soluble Na salt, e.g. CO311, HCO31, NO31, or a soluble Ca salt, e.g. Cl1, NO13. Residual liquor is recycled to (1). The nitrate salt in (1) may first be added to the fluorine-free solution, which is then added to the untreated liquor; in step (1), insoluble fluorides may alternatively be formed with Ce, Th, Ga, Gd, Ni, Pt, Rh, U, Y, or Ca, nitrates, and silicofluorides with Ba, Mg, or Na nitrates.  In step (4), the reagent may be S11, CO311, CN1, Fe(CN)611, O-or or p-PO411, NaOH, KOH, oxalate, stearate, or dimethylglyoxime, in solution or solid form. After step (2) the Fe and Cr precipitates are dissolved in acid, e.g. HNO3, H2SO7, HAc; a slight excess of NaOH or KOH is added to precipitate Fe(OH)3; and the solution is ammoniated to precipitate Cr(OH)3.  Any remaining Cr in solution may be treated with acid, e.g. HAc.  In a modification, BaCO3 is added after step (1).  Residual F is precipitated initially at BaSi F6 and removed.  Further BaCO3 precipitates FeCO3; the solution is ammoniated to precipitate Cr(OH)3 and Fe(OH)3, and BaS is added to bring down NiS. If excess BaS is used, S is removed by adding CuO to precipitate CuS; if alternatively BaS2O3 is used, excess is oxidized to BaSO4 with H2O2. The solution is evaporated until NH4NO3 starts to crystallize; Ba(OH)2 or BaCO3 is then added to form Ba(NO3)2 which crystallizes out, and ammonia compounds are volatilized.
Patent GB-1072754-A (GB)
Title: A planetary or counter-shaft gear box having double helical teeth
IPC: F16H1/22
Filed: 1964-06-09
Abstract: 1,072,754. Toothed gearing. ZAVODY V. I. LENINA PLZEN NARODNI PODNIK. June 9, 1964 [June 11, 1963], No. 23774/64. Headings F2Q and F2U. An internal herringbone toothed two-part ring gear 1<SP>1</SP>-1<SP>11</SP> is driven from or drives through axially stationary or planetary pinions 5 two oppositely handed helical pinions 7<SP>1</SP>, 7<SP>11</SP> coupled by torsionally flexible shafts 8<SP>1</SP>, 8<SP>11</SP>. Shafts 8<SP>1</SP>, 8<SP>11</SP> may be pinned or splined together and axially held by a split-ring 9 and threaded plug (10), Fig. 2 (not shown), and are splined to a shaft 11. The pinions 5 are axially movable or axially-fixed if of two-part construction.
Patent GB-1153313-A (GB)
Title: Improvements relating to Aircraft Automatic Pilots
Inventor: MARSHALL DEREK
IPC: G05D1/00
Filed: 1965-06-04
Abstract: 1,153,313. Automatic control of aircraft. ELLIOTT BROS (LONDON) Ltd. June 3, 1966 [June 4, 1965], No. 23831/65. Heading G3R. In an aircraft control system one or other of two automatic pilots may be selected to control a corresponding one of two control surfaces for effecting control of the aircraft about the same axis, the other surface then being controlled by a signal dependent on any difference in position between the two surfaces. In Fig. 1, an aircraft elevator 13 is controlled by signals 11 of a first automatic pilot AP1 applied through an electrical amplifier 10 and a torque-limiting hydraulic actuator 12. With electromagnetically operated run lock 14 locked, the hydraulic actuators of other elevators 17, 18 are mechanically coupled for operation with elevator 13. Electrical followup signals 19, 20 are applied to the input of amplifier 10 in response to movement of elevators 13, 17. The position of the elevators is compared with that of a further elevator 26 by an electrical comparator 24 the output of which is applied through an amplifier 23 and hydraulic actuator 22 so that elevator 26 is moved with the rest. Signals 11 and 20 are compared by means not shown which, when faults are detected in actuator 15, cause compensatory adjustment of the other elevators. Signals 11 and 19 are also compared so that when a fault is detected in actuator 12 or automatic pilot AP1 there is changeover to a second automatic pilot AP2. The positions of elevators 18 or 26 are compared at 28 so that, if there is a discrepancy due to a fault, changeover to the second automatic pilot is prevented. Such changeover is normally effected by the closing of relay contacts S 1  to apply signals 11' to amplifier 23. These signals are maintained at zero prior to changeover by a feedback integrator which, by virtue of the operation of a switch CO, serves to provide an integral component of control after changeover. Changeover is prevented if signals 11' are too great. Run lock 21 is unlocked and run lock 14 unlocked for operation of the other elevators by automatic pilot AP2.
Patent GB-1280290-A (GB)
Title: Novel derivatives of benzhydrylpiperazine, their process of preparation and their therapeutic application
IPC: C07D295/185
Filed: 1971-04-19
Abstract: 1280290 Piperazine derivatives DELALANDE SA 19 April 1971 [18 March 1970] 23880/71 Heading C2C The invention comprises piperazine derivatives of the formula wherein R is CONH 2 , CONHCH(CH 3 ) 2 , 3,4,5- trimethoxyphenylcarbamoyl, pyrrolidin - 1- yl - carbonyl, morpholinocarbonyl, CH 3 CO-, CH 3 CH 2 OCO-, 2 - propargyloxy - 1 - hydroxyethyl or 1 - hydroxy - 1 - phenylethyl and their preparation. Compounds in which R is 2 - propargyloxy - 1 - hydroxyethyl or 1- hydroxy-1-phenylethyl are prepared by reacting 1-benzhydrylpiperazine with 1-propargyloxy - 2,3 - epoxypropane and 2 - phenyl- 2,3-epoxypropane respectively. The remaining compounds are obtained by reacting 1-benzhydrylpiperazine with compounds of the formula Pharmaceutical compositions, suitable for oral or parenteral administration, contain the above novel compounds and pharmaceutically acceptable carriers. The compounds have antihypertensive and analgesic properties.
Patent GB-1402141-A (GB)
Title: Phase-sensitive detector circuit arrangements
IPC: H03D1/22
Filed: 1972-05-22
Abstract: 1402141 Phase senstive detector DAWNAY FAULKNER ASSOCIATES Ltd 26 July 1973 [22 May 1972] 23936/72 Heading H3A A phase sensitive detector comprises a first signal path including an FET Q1 for coupling an input terminal 1 to an output terminal 4, a second alternative signal path including a further FET Q2 for coupling the terminal 1 to earth, an arrangement 7 for supplying reference voltages Vr1, Vr2 in antiphase to switch Q1, Q2 alternately so that at any instant one of the signal paths is open. The detector may include a third and a fourth signal paths from terminal 2 including FET's Q3, Q4 also switched by the same reference voltages VR1, VR2. The switching voltages may have square waveforms or alternatively different rectangular references voltages may be applied to the FET's Q1, Q3 connected to each terminal 1, 2 so that quiescent periods exist during which neither of the signal paths to the terminal 4 is open. The elements 3, 7 are phase inverters. The terminal 4 may be connected to an amplifier 5 with feedback elements C3, R3.
Patent GB-599003-A (GB)
Title: Improvements in or relating to apparatus for the control of internal combustion engines for aircraft
IPC: F02D9/00
Filed: 1945-09-17
Abstract: 599,003. Fluid-pressure servomotor-control systems. NAPIER, & SON, Ltd., D., and CATFORD, A. L. Sept. 17, ]945, No. 23965. [Class 135] Apparatus for controlling an internal-combustion engine for aircraft comprises a differential gear of which one main wheel is connected to the engine throttle and the other to a servomotor controlled by an evacuated boost capsule, whilst a cage carrying the pinions of the differential is rotated by a subsidiary servomotor under the control of an operating lever. As shown diagrammatically in Fig. 1, one main wheel E<4> of the differential is fixed to a shaft N carrying a lever N<1> connected to the throttle, whilst the other wheel E<3> is rotated by a .vane-type servomotor J<1> supplied with pressure liquid under the control of a pilot valve J actuated, through a rod H<1>, by the evacuated capsule H subjected externally to boost pressure. A shaft D, rotated by the subsidiary servomotor C which is operated by pressure liquid controlled by a valve B actuated by the operating lever A, carries a gear sector D<2> engaging a gear sector F<1> on a cam-shaft F, and a pinion D<1> engaging a gear sector E 1 on the cage carrying the pinions E<2> of the differential. A cam F<2>, fixed to the cam-shaft F, coacts with one end of a lever G pivoted at G and bearing at its other end upon a spring H<2> engaging an abutment H<3> fixed to the rod H<1> whilst another cam F<3>, also fixed to the cam-shaft, coacts with a lever K<1> fixed to one end of a shaft K, whose other end carries a lever K<2> for controlling the airscrew governor and the ignition timing. The lever K<1> is maintained in contact with the cam F<3> by a spring or by a fluid-loaded piston L<1> acting on the end of the lever. A toothed member K<4>, loosely mounted on the shaft K and carrying stops K<5> for engagement with the lever K<2>, is geared to an override lever N<2> mounted loosely on the shaft N, whereby the airscrew may be adjusted independently of the servomotor to obtain fine pitch. When the throttle is closed, a depression in the cam F<3> permits the lever K<2> to be adjusted, by the override lever, to the feathered position of the airscrew. As shown in Fig. 2, which is a section through the apparatus in its practical form, the end of the lever G which coacts with the cam F<2> is articulated at G<4> for adjustment purposes, and sealing diaphragms O<1>, O<2> are provided at each end of the valve J.
Patent GB-447175-A (GB)
Title: Improvements in and relating to flat knitting machines
IPC: D04B11/06
Filed: 1935-08-27
Abstract: 447,175. Flat knitting - machines. SCHUBERT & SALZER MASCHINENFABRIK, AKT.-GES., 11, Lothringerstrasse, Chemnitz, Germany. Aug. 27, 1935, No. 23971. Convention date, Aug. 27, 1934. [Class 74 (ii)] In an auxiliary presser device for flat knitting-machines adapted to produce stockings in a continuous operation the loops of the instep or intermediate portion being placed in suspense during the knitting of the heel parts, presser instruments 8 movable in the direction of the axes of the frame needles 3 and normally disposed beneath the usual presser edge 2 are arranged in a pivotally mounted frame whereby for the production of the heel parts the instruments 8 are moved from their position below the presser edge 2 into a position in front of and lying in the plane of the edge 2. The presser instruments 8, carried by a bar 7 and supported by arms 6, are moved outwardly and then upwardly through levers 5, 12 by a cam 18 and cam surfaces 10a, 11a, the spring 9 pressing them against the normal presser surface 2. The follower roller 13 may be moved by a fork 15 on to a circular disc 17 when the instruments 8 are to be rendered inoperative. In operation the pressing edge is thus moved outwardly by a distance equal to the thickness of the presser instruments 8, pressing being effected only on the frame needles, (which have been moved outwardly as a whole), appropriate the instruments 8, i.e. in the range of the heel portion only.
Patent GB-462028-A (GB)
Title: Improvements in or relating to the production of semi-soluble and dispersable calcium pectinate
IPC: C08B37/00
Filed: 1935-08-28
Abstract: A pectinous material which disperses readily in water without forming lumps and which dissolves fairly well in hot water is obtained from readily soluble but lump-forming calcium-precipitable pectin by increasing its calcium content to the desired extent, e.g. by washing with calcium acetate in alcohol, or from insoluble calcium pectinate by reducing its calcium content, e.g. by washing with acidified alcohol. Specification 461,200 is referred to.
Patent GB-798681-A (GB)
Title: Improvements in and relating to tool rests for lathes
IPC: B23B29/06
Filed: 1954-08-18
Abstract: 798,681. Lathe-details. WALDRICH GES., H. A. Aug. 18, 1954 [March 13, 1954], No. 24083/54. Class 83 (3). A tool-rest 5, Fig. 1, for a roll-turning lathe has a central groove 11, Fig. 2, perpendicular to the work-axis, for a form-tool 17, Fig. 1, which is mounted on a number of adjacent flat packing-pieces 20 arranged in an upright position under the tool and adjustable longitudinally so that the forward ends of the packing-pieces support the cutting-edge of the tool when the latter is clamped in the tool-rest. The packing-pieces 20 are of varying width and are supported on a plate 25. The tool is clamped by screws 12 which rotate in bridge-pieces 13 arranged over the top of the recess. Endadjustment of the form-tool is provided by a screw 33, and a templet 31 may be used at the rear to set the packing-pieces close up to the cutting-edge of the form-tool. The top surface of the packing may be hardened or roughened. Provision is made at the sides of the rest for roughing-tools supported on adjustable members 8 and clamped at 10. Specification 798,682 is referred to.
Patent GB-333053-A (GB)
Title: Improvements in and relating to bearings for colliery hutches and the like
IPC: F16C33/10
Filed: 1929-08-07
Abstract: 333,053. Ritchie, D. M. Aug. 7, 1929. Gravity and force-feed lubricating. -The inverted cover of an axle bearing for colliery hutches &c. has two depending portions separated by a gap e through which a wheel for applying grease has access to the axle. The surplus grease is scraped off the axle and received in two chambers d formed in the cover, from which it passes to the axle as required. In the case of lubrication by oil, the chambers d contain felt, and the oil is squirted on to the axle through pipes with flexible upper ends leading from a tank which is either raised to a sufficient height or contains a spring or weight loaded plunger, actuated in each case through a tappet by the passage of the vehicle wheels. Specification 302,822, [Class 12 (i), Bearings &c.], is referred to.
Patent GB-361369-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K19/32
Filed: 1930-08-12
Abstract: 361,369. Controlling dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Alger, P. L. ; 1758, Wendell Avenue, Schenectady, New York, U.S.A.) Aug. 12, 1930, No. 24147. Convention date, Aug. 12, 1929. [Class 35.] Cores and polepieces.-A field element for a synchronous dynamo-electric machine consists of one or more field units of six poles having exciting coils on at least two pairs of poles connected in separate circuits, and the current in one circuit can be reversed to change the field from 3N poles of alternate polarity to 2N poles of alternate polarity, N being an even number. In one form, Fig. 1, exciting coils are provided on all six poles, and the coils on poles AD, BC and EF are in three separate circuits. With the switch 16 in the right-hand position, the three circuits are in parallel and the polarity shown in Fig. 1A is obtained. With the switch in the left-hand position the coils AD are short-circuited, and the circuits comprising the coils BC, EF are connected in parallel with the circuit EF reversed. The resultant polarity is shown in Fig. 1B. In a modification, the poles A, D are unwound, but in the six-pole condition they form consequent poles. The ratio of the width of the poles A, D to the widths of the remaining poles may have any value from 1À0 to À25 inclusive, depending on the necessity for maximum efficiency at low or high speeds. Specifications 25858/03 and 357,225, [both in Class 35, Dynamoelectric generators &c.], are referred to.
Patent GB-324360-A (GB)
Title: Improvements in and relating to electric motor starting apparatus
IPC: H02P1/54
Filed: 1928-08-24
Abstract: 324,360. Allan, J. E. Aug. 24, 1928. Master control systems, electromagnetic; systems &c. depending on the use of two or more motors; automatic starters. - Two or more motors of a group are arranged with a single common starter and separate control switches for each motor, so that the motors can be started one after another in any order, each motor after its own starting operation is completed, being disconnected from the common starter and being connected across the supply mains. Fig. 1<A> is a simplified diagram of one arrangement according to the invention, in which a resistance R and electromagnetic contactors R, R<2>, R<3> are connected between a negative main N through either of two motors M<1>, M<2> to a positive main P. Each motor has a push-button switch A and when either of these is closed, electromagnetic switches N<1>, S<1> join the corresponding motor to the mains through the resistance; the closure of the push-button also by means of a relay T determines the closure of the first contactor R<1> and the subsequent closure of the second and third in succession. By opening contacts t<1>, t<2> the relay prevents premature starting of the second motor. Suitable hold-on connections :for the contactors and the relay are formed through auxiliary contacts not shown in the Figure. The closure of the last contactor energizes the closing magnet of a switch P<1> which connects the corresponding motor across the mains, and causes the opening of the switch S<1> and the return of the relay T. The second motor can then be started in like manner. In a modification the starting resistance is cut-out by a moving contact-member actuated by a solenoid core fitted with retard:.ng means such as an eddy-current brake; the movement of the solenoid-core proceeding automatically, after the closure of a relay, until all resistance has been excluded and the corresponding motor has been put across the mains; and afterwards moving back to the original position ready for the starting of the next motor. The arrangements may be adapted for use with AC. motors, for example, induction motors with rotor resistance. The invention is stated to be applicable to motors driving auxiliary machines in marine engine rooms.
Patent GB-361351-A (GB)
Title: Improvements in thermionic valve circuits as applied to radiotelephonic systems and apparatus
IPC: H03F1/08
Filed: 1930-08-15
Abstract: 361,351. Valve amplifying circuits. GRAHAM AMPLION, Ltd. and HODGSON, A. D'A., St. Andrew's Works, Slough, Buckinghamshire. Aug. 15,1930, No. 24496. [Class 40 (v).] In a wireless receiving circuit using a valve 10, Fig. 3, with at least five electrodes, one 14 of the electrodes, additional to the usual cathode 11, control grid 12, and anode 15, is connected to a feed-back circuit 24 to provide reaction with the input circuit 16, 17. The electrode 14 is a grid and is positively biased at 35 to serve as an auxiliary anode for highfrequency reaction, and a screening-grid 13 between it and the cathode is connected to the latter through a condenser 23 of low impedance to highfrequency currents. The screening-grid is given a positive potential by connecting it to a tapping 22 on the source of power supplied to the anode, and is coupled to anode circuit 25 to provide lowfrequency reaction. The grid 13 may be used for high-frequency reaction, the grid 14 for screening, and a condenser of low impedance to high-frequency currents connected between the anode and cathode, Fig. 2 (not shown). In a super-regenerative receiver. Fig. 4, the circuit of the grid 13 comprises a high-frequency reaction coil 24 and a circuit 29, 30 tuned to the supersonic frequency, the grid 14 is connected to the cathode, and the anode circuit comprises a supersonic-frequency reaction coil 31, and a filter 32, 33, 34 to byepass the supersonic frequency from the output 25.