baber/WOPTO huggingface dataset:
Patent GB-386297-A (GB)
Title: Improvements in or relating to controlling devices for variable speed gearing for motor vehicles
IPC: F16H63/32
Filed: 1931-04-08
Abstract: 386,297. Controlling variable-speed gearing. FIAT SOC. ANON., 250, Via Nizza, Turin, Italy. April 8, 1931, No. 10416. Convention date, April 8, 1930. Void [Published under Sect. 91 of the Acts]. [Class 80 (ii).] Mechanical selector mechanism for change-speed and reversing gearing of the sliding-gear type comprises two slidable plates B, D, Fig. 18, side by side, a third slidable plate C beneath them in the middle, a supporting plate S, and a transversely-slidable locking plate A. These plates may be made by stamping and punching. Ball selector lever 3 extends down into engagement with plate C, which slides in a depression 5, Figs. 3 and 5, in the bottom of fixed plate S. Plates B, D slide over plate C on ledges 7, 7<1> in plate S. Transverse slots 11, 11<1>, Fig. 3, are for the passage of locking lugs 19, 21, Figs. 6 and 7, of plate A. Lever 3 extends down through straight slot 17 in plate A, which is thus carried sidewise at each selecting movement of the lever. Plate B, Figs. 2 and 9, which carries a fork 27 to effect first and second speeds, has a single notch 29 for engaging lever 3, and a notch 31 for engaging lug 19. Plate D, Figs. 1 and 15, which carries a fork 53 for reverse, has a single notch 59 for engaging lever 3, and a notch 63 for engaging lug 21. It also has a longitudinal slot 61 to allow the free passage of lever 3 when the latter is engaging transverse slot 47, Fig. 12, in plate C. Plate C, which carries a fork 41, Fig. 2, to effect third and fourth speeds, has slots 47a, 47c to allow free passage of lever 3 when operating plates B, D, respectively, and shallow lateral slots 49, 51 for engaging the horizontal tips of lugs 21, 19, Figs. 20 and 24, when lever 3 is operating plates B, D. In Fig. 17 is shown an assemblage of all the plates in neutral with a spring plunger 35, Fig. 2, passing down through plates A, D into engagement with one of three lock slots 50 in plate C, looking it independently of plate A. Lever 3 engages slot 47, Fig. 12, and movement right and left of Fig. 17 operates plate C. To operate plate B, lever 3 is moved to engage slot 29 and then to left or right, as shown in Fig. 20, in which plate A is not shown. After each change, the parts must be returned to neutral, shown in Fig. 17. To operate plate D for its single reversing motion, lever 3 must be moved not only sidewise into engagement with notch 59, Fig. 15, but also downwards of Fig. 1 so that a reverse stop 4 carried by lever 3 passes clear below a stop 4<1> formed on the gear case. In order to operate the reverse, as shown in Fig. 24, lever 3 must thus pass down through and be guided by a. slot 15, Fig. 3, in the bottom of support plate S. Trans. verse slots 25, Fig. 6, in plate A are for the passage of locking plungers, not shown, for engaging rows of notches 33, 67, in plates B, D, respectively.
Patent GB-494075-A (GB)
Title: Hydraulic rotary engine
IPC: F16H47/04
Filed: 1938-04-05
Abstract: 494,075. Rotary engines. AKTIEBOLAGET IMO-INDUSTRI, and MONTELIUS, C. O. J. April 5, 1938, No. 10428. [Class 110 (ii)] Two meshing-screw hydraulic engines (or pumps) whose shafts are driven in the same or opposite directions, are coupled to a driven power shaft by means of a differential gearing. A device to vary the ratio of the speeds of the rotors is incorporated. Fig. 1 shows a rotatable housing 11 mounted in bearings 13, and containing axial bores for a central rotor 14 and two side rotors meshing with 14. The latter is supported on stub shafts 16, 17, in bearings in the end caps 12. Fluid under pressure enters a port 18 to a chamber 19, and passes axially through the housing 11, through holes 20 and is discharged by way of a port 22. A rotatable drum 29 is keyed to the driven shaft 30 and supported on a bearing 23. Sun wheels 25, 26, are secured respectively to an end cap 12 and the shaft of the rotor 14. Bevel wheels 27 are mounted on stub shafts 28 in the drum 29. Two brake discs 31, 32 are slidably keyed on shaft 16, and on an end cap 12, respectively. Fluid under pressure enters either port 37, 38, to bear on a disc 31 or 32, and force the disc to rub against a braking surface 34, and thus slow down or stop one rotor. When the engine is started up the wheels 25, 26 rotate in opposite directions at the same speed, and the shaft 30 is stationary. When fluid is admitted through a port 37 or 38, the braking action of a disc and the part 34 slows down one wheel 25 or 26, and the shaft 30 is rotated. To cool the braking parts, cooling fluid may flow through the chamber 39. In a modification, Fig. 4, central screws 60, 55, on shafts 62, 57, each have two meshing screws 61, 56, respectively. A gear 59 is carried by the shaft 57, and meshes with a gear 64 mounted loosely on the shaft 62. The gear 64 has a hub 65 which, at its end, is shaped to form a pinion 66. Shaft 62 carries a pinion 67 at its end. A drum 73 and cover 74 are supported on ball-bearings 75, 76. Rotatably journalled in the drum 73 are two gears 80, and journalled in the cover 74 are gears 82, 83. Pinion 67 engages gears 80, and pinion 66 engages gears 82, 83. The speed of the screws 55, 60 is controlled by a throttle valve 90, Fig. 5, controlling the outlets 91, 92 from valve chambers 71, 72. Working fluid is supplied under pressure to an inlet chamber 70, and passes to end chambers 71, 72. When the valve 90 is in the position shown in Fig. 5, shafts 62, 57 rotate at the same speed in the direction indicated, and the drum 73 and shaft 84 are stationary. The valve is moved upwards or downwards to throttle ports 91 or 92, and thus cause one or other of the rotors 60 or 55 to slow down. The gears 59, 64 may be of different diameters, and the diameters of pinions 66, 67 may also vary. The number of planet wheels may vary, and the rotors threaded in opposite directions.
Patent GB-778879-A (GB)
Title: Improvements in or relating to grids for use in electric discharge tubes
IPC: H01J19/38
Filed: 1955-04-12
Abstract: 778,879. Thermionic valves. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 12, 1955 [April 14, 1954], No. 10472/55. Class 39(1). The winding of a grid electrode consists of at least two parallel wound wires of different resonances, arranged closely adjacent and touching, so that the wires damp each other. The difference in resonance can be attained by having wires of different diameters, and/or different materials such as nickel and molybdenum.
Patent GB-678444-A (GB)
Title: Froth flotation methods and apparatus
IPC: B03D1/16
Filed: 1949-04-20
Abstract: 678,444. Froth flotation; stirrers. DEHN, S. G., (Payne & Co., P. M.). April 20, 1949, No. 10480/49. Classes 82(ii) and 86 An agitator for froth flotation apparatus has a plurality of substantially rigid rods 22 mounted on the end of an impeller shaft 19 and diverging in conical arrangement, the device being arranged to rotate within a conical shroud or around a coaxial conical projection 23 fixed in the flotation cell.
Patent GB-1124041-A (GB)
Title: Gripping devices
Inventor: SPENCER HERBERT IAN
IPC: G01N3/04
Filed: 1965-03-12
Abstract: 1,124,041. Grips for holding specimens. JOSEPH LUCAS (INDUSTRIES) Ltd. June 13, 1966 [March 12, 1965], No.10526/65. Heading G1S. In a gripping device for holding a specimen S, the ends of the specimen are each held between jaws 14 slidably mounted in an aperture in a body member 10, movement of the jaws being actuated by a backing member 15, 18, 19 which is slidable through an aperture in the extension member 12 of the body member 10, through engagement of projections 11 of the body member 10 in recesses of the member 12. On screwing the member 12 into a machine the backing member moves causing the jaws 14 to close into the gripping position. The device may be used in a fatigue testing machine.
Patent GB-941526-A (GB)
Title: Method and means for the recovery of sodium compounds in waste liquor boiler plant
IPC: D21C11/02
Filed: 1961-03-22
Abstract: <PICT:0941526/C1/1> In the recovery of sodium compounds from waste liquors, the dust from the flue gases of the waste liquid recovery boiler is collected by passing through an electrostatic precipitator, moistened and then granulated into pellets of a suitable size and shape to be injected directly into the recovery boiler. Referring to the diagram, the dust from the flue gases leaving boiler 1 is collected in an electrostatic precipitator 2, and falls on to a conveyer 4 which carries it to a discharge trough 5.  The dust then passes through a moistening device 6 and shoot 7 to a granulator 8 which comprises two cooperating knurled rollers between which the dust passes.  The granulated dust is then fed by an injector 9 into a duct 10 and is blown by a fan 11 on to the layer of dry lye and 1a at the foot of the boiler 1.  Numeral 3 designates a heat recovery unit for the flue gases which may lie either subsequent to the precipitator as shown or before the precipitator.
Patent GB-1420821-A (GB)
Title: Apparatus for automatically threading a tape
IPC: H02P29/00
Filed: 1973-03-05
Abstract: 1420821 Recording and playback; automatic tape threading SONY CORP 5 March 1973 [7 March 1972] 10573/73 Heading G5R Apparatus for automatically threading a tape having a transparent leader includes a photoelectric sensor 28, 29 for sensing the passage of the threaded tape, the tape drive being made inoperative if the tape is not sensed within a predetermined time from the start of a threading operation. As shown, the leader, which is both wider and stiffer than the tape, is stripped from a rotating supply reel 3 by a finger 17 of a pivoted arm 15 which guides the leader to a curved guide 22 disposed around a rotary head drum 6. The leader is then directed to a star-shaped catch-spring 26 on the hub of a take-up reel 4 by a pivoted arm 25. A transparent tape trailer may also be provided. The control circuit, Fig. 3 (not shown), positions the arms 15, 25 as shown, and starts the drive motor at the start of threading, and on detecting the tape energizes a servo-control for the motor, retracts the arms 15, 25 and supplies power to auxiliary circuits. Threading is stopped if the tape is not detected within the predetermined time, which is the time taken by capacitors (47, 48) to charge to the breakdown voltage of a Zener diode (49), thus deenergizing a relay (43). Detection of the transparent trailer at the reel end is used to halt transport and then to switch off the apparatus after the predetermined time. When the transport is in the rewind mode, capacitor (48) is disconnected, so that on detection of the leader the transport is halted after a rather shorter predetermined time sufficient to wind up the leader.
Patent GB-575632-A (GB)
Title: Improvements in or connected with automatic or semi-automatic weighing, measuring, or other feed supply apparatus
IPC: G01G13/00
Filed: 1944-06-02
Abstract: 575,632. Hoppers. AVERY, Ltd., W. & T., and PAGE, A. E. June 2, 1944, No. 10582. [Class 78 (i)] In mechanism for feeding material to automatic weighing apparatus, a vibratory plate d is projected across the outlet a<1> from the bulk supply hopper a when a dribble feed is required in the final stage of a weighing. The plate d is supported by leaf springs f on a platform g which is suspended by two pairs of parallel links h from the framework k. These links are moved from the position shown in broken lines to that shown in full lines by a pneumatic relay control c which is controlled by the motion of the weighbeam. The mechanism for vibrating the plate is of the kind described in Specification 556,748 and is brought into action at the moment of projection. The movement ceases on completion of the weighing operation.
Patent GB-1031971-A (GB)
Title: Improvements in or relating to electric circuit breakers
Inventor: HALL JOHN SPENCER
IPC: H01H71/40
Filed: 1964-03-13
Abstract: 1,031,971. Automatic circuit breakers. D SQUARE CO. March 13, 1964, No. 10610/64. Heading H2B. The circuit breaker described in Specification 893,282 is rearranged for higher voltage, lower current rating so as to incorporate within a casing having the same overall dimensions an improved arc-chute 74, 75 and an electromagnetic tripping device of higher ampere turns. The tripping device comprises a core 54 (Fig. 12, not shown) upon which is pivoted an armature 44 carrying a latch plate 52. A bimetal 70 passes through the core 54 and acts upon a part 45 of the armature. About one arm of core 54 is wound a coil 66 connected between the line terminal 64 and the secured end of the bimetal 70. For maximum sensitivity the coil 66 can be of nickel chromium alloy acting as a heater for the bimetal. For reduced sensitivity coil 66 is reduced in turns until in the limit (Fig. 9, not shown) it comprises a simple strap 80 which together with bimetal 70 forms a single turn. Further reduction may be achieved by bending a tongue 82 on the core 54 which supports it in the housing thus increasing the air gap between the armature 44 and core 54. Conjoint actuating links and tripping bar can be inserted at 35, 50 respectively for multiple use.
Patent GB-505007-A (GB)
Title: Improvements in or relating to gyroscopes
Filed: 1937-07-28
Abstract: 505,007. Gyroscopic apparatus. HIL, LIER, A. (Sperry Gyroscope Co., Inc.) July 28, 1937, No. 10663/39. Divided out of 504,912. Drawings to Specification. [Class 97(iii)] The effect of the rotation of the earth on a gyroscope having its rotor axis normally horizontal, e.g. a gyro-compass, is compensated by air jet means for applying a torque about the axis of tilt. The Specification includes a description of the gyro-compass, described in Specinoation 504,913. Specification 504,912 also is referred to.
Patent GB-550433-A (GB)
Title: Improvements in or relating to electrical resistance heating elements
IPC: H05B3/20
Filed: 1941-08-21
Abstract: 550,433. Electric resistance heaters. MORPHYRICHARDS, Ltd., and MORPHY, D. W. Aug. 21, 1941, No. 10673. [Class 39 (iii)] [Also in Group XXII] An electric heating element consists of a thin sheet of iron-nickel-chromium alloy having parallel slots a, b extending nearly across it from opposite edges alternately. The two ends 3, 4 are bent through openings in a plate 1 of mica or micamite to form terminals, and a second plate 2 is applied to cover the element. Owing to the fragility of the heating element, the slots a, b are first punched in a sheet sufficiently wide to close them at both ends, and a supporting film of mica or micamite is applied to one or both sides. The margins of the metal sheet are then cut off on both sides sufficiently to open alternate slots. The resistance of the element may be varied by stopping short of one end when removing the margins, so that some slots remain closed. In the initial punching operation sets of slots for a number of elements are formed in a single large sheet and at the same time the individual sheets are cut ready for marginal trimming. The heating element is suitable for flat irons, kettles, or the like.
Patent GB-887030-A (GB)
Title: Process for the preparation of trichlorocyanuric acid
Inventor: CHRISTIAN JOHN DONALD
Filed: 1960-03-25
Abstract: Trichlorocyanuric acid is made by adding an aqueous solution of "alkali meatal cyanurate" to a cold aqueous solution of chlorine maintaining the resulting mixture at 0 DEG -25 DEG C. and ensuring that the amount of chlorine present is in storchiometric excess over the amount required to convert the added alkali metal cyanurate to trichlorocyanuric acid.  Preferably the reaction is carried out at a temperature between 0 DEG  and 10 DEG C.  "Alkali metal cyanurate" is defined as cyanuric acid, the three hydrogen atoms of which have been replaced by alkali metal atoms.  Sufficient alkali metal hydroxide may be present in the reaction mixture to maintain dissolution of the alkali metal cyanurate.  Lithium sodium and potassium are specified alkali metals.  Chlorine may be passed into the mixture at a rate in excess of the rate required to saturate the mixture with chlorine.ALSO:Trichlorocyanuric acid is made by adding an aqueous solution of "alkali metal cyanurate" to a cold aqueous solution of chlorine, maintaining the resulting mixture at 0 DEG C.-25 DEG C. and ensuring that the amount of chlorine present is in stoichiometric excess over the amount required to convert the added alkali metal cyanurate to trichlorocyanuric acid.  Preferably the reaction is carried out at a temperature between 0 DEG C. and 10 DEG C.  "Alkali metal cyanurate" is defined as cyanuric acid, the three hydrogen atoms of which have been replaced by alkali metal atoms.  Sufficient alkali metal hydroxide may be present in the reaction mixture to maintain p  dissolution of the alkali metal cyanurate.  Lithium, sodium and potassium are specified alkali metals.  Trichlorocyanuric acid may be used as a chlorinating agent for unsaturated organic compounds.
Patent GB-258220-A (GB)
Title: Process for avoiding back lighting or re-lighting in vapour discharge vessels
IPC: H01J13/14
Filed: 1926-04-23
Abstract: 258,220. Siemens & Halske Akt.- Ges. Sept. 11, 1925, [Convention date]. Low-pressure metallic-vapour ap paratus. - In order to avoid reverse cur. rents in rectifiers and unintended relighting of apparatus after switching off charged metal par. ticles have theii charge neutralized before they reach the cathode, or are intercepted so as not to strike the cathode surface. In one arrangement, mercury condensing on the wall of the apparatus flows past a conductive ring in contact with the wall immediately above the cathode, and connected to the cathode directly or through a resistance; the anode and adjacent parts are kept hot by the discharge and do not condense any vapour. In another construction, the cathode 5, Fig. 2, is of smaller width than the container and is surrounded by a gutter 8 receiving the condensate; a small tube 9 conveys the condensate to the cathode below the surface of the latter. Condensation on the dome of the apparatus vertically above the cathode is prevented by a covering 10 of heat-insulating material. The anode 6 may be designed so that no condensation occurs on it. In a third form, the container is of inverted U shape, one limb housing the cathode 12, Fig. 3, while the other limb 11 serves as condensing chamber; the cathode limb may be surrounded by a heat-retaining jacket 15. Thus passage of metal particles through the discharge is prevented. A cooling- device 14 is arranged in the body of condensed mercury, which flows through a tube 16 to the lower part of the cathode. Another cooling-device 17 may be arranged in the cathode, to allow of the maintenance of a low-current arc and to facilitate starting. The supply of cooling water may be regulated so as to prevent condensation on the top of the device 17; or this may be provided with a cap of tungsten, iron, or the like, so that any condensate has the same potential as the cathode. The anode 13 is either kept hot or is placed in the condensing-limb as shown.
Patent GB-1205411-A (GB)
Title: Electric motor speed regulator
Inventor: WILLIAMS JOHN LLEWELLYN
IPC: H02P27/02
Filed: 1967-03-07
Abstract: 1,205,411. Automatic control of speed. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan.23, 1968 [March 7, 1967], No. 10772/67. Heading G3R. [Also in Division H2] A three phase induction motor 5 is energized for adjustable portions of the A. C. cycle via switches 1 which are arranged never to be fully non-conducting throughout entire cycles, so as to permit regenerative braking. As shown, the switches 1 comprise back to back thyristors, and they are triggered for at least the last 60 degrees of each half cycle by a circuit 3 which comprises further thyristors and a voltage limiter and responds to the difference between the signal from a tachogenerator 10 and a reference 12. Inductors and capacitors 8, 9 form a filter. In an alternative embodiment, not shown, the switches comprise thyristors shunted by an impedance, preferably a resistor or inductor whose impedance is at least five times that of the load.
Patent GB-239484-A (GB)
Title: Improvements in boiler feed plant for condensing locomotives
IPC: F22D11/06
Filed: 1925-04-25
Abstract: 239,484. Krupp Akt.-Ges., F. Sept. 2, 1924, [Convention date]. Railway locomotives, steam; pipes, arrangement and disposition of. - The make-up feedpump or injector N of a locomotive is connected through a two-way valve M with the suction and delivery pipes G, H of the pump C supplying cooling water to the condenser A of the driving turbine D. The cooling water is taken back to the supply tank F through a cooler J. When the cooling-water pump is in operation, the feed pump draws water from the delivery pipe H, and when it is not in operation the two-way valve is so turned that the feed pump draws water from the supply pipe G.
Patent GB-1117982-A (GB)
Title: Surface coating composition containing metallic pigment
Inventor: OVEREND RICHARD BERTRAM
IPC: C09D5/10
Filed: 1966-03-11
Abstract: Ferrochromium in the form of platelets or flakes having a particle size diameter not greater than 0.075 mm. is used as the pigment in air-drying oil-modified alkyd resin paints.  The optimum paint medium to pigment weight ratio is about 1:1.  The composition may also contain other pigments, thickening agents and anti-corrosion additives.ALSO:Ferrochromium in the form of platelets or flakes having a particle size diameter not greater than 0.075 mm. is used as the pigment in surface coating compositions.  The alloy is defined as containing Cr 60-72%, preferably with C less than 0.1%, and Si 4-6%. Comminution is effected by crushing followed by ball-milling. The latter operation may be performed in an oil such as white spirit containing a lubricant such as stearic acid; or in water containing as lubricant an aliphatic amine having an alkyl group of at least 8 C atoms (e.g. lauryl-, octadecy-, lauryl dimethyl-, or octadecyl-dimethylamine), or an N-C16- 18 alkyl-trimethylenediamine. The coating composition may be based on an air-drying oil-modified alkyd resin, the optimum paint medium to pigment weight ratio being about 1:1.
Patent GB-1010076-A (GB)
Title: Azo compounds and means for their production
Inventor: ELSLAGER EDWARD FAITH
IPC: C09B29/06
Filed: 1964-03-13
Abstract: Azo compounds of general formula <FORM:1010076/C4-C5/1> in which R is a 3-sulpho or 4-sulpho group, R1 and R2 are separately chosen from methyl, ethyl or isopropyl groups, and Y is an ethylene or 2,2-dimethyltrimethylene group, are prepared by coupling an a -naphthylamine derivative of formula <FORM:1010076/C4-C5/2> with a diazo compound of formula <FORM:1010076/C4-C5/3> in which Ac is the anion of an acid or the hydroxyl ion.  The reaction is carried out in aqueous-organic media preferably at acidic or neutral pH values at temperatures below 15 DEG  C. Acid addition salts are also prepared especially hydrochloride derivatives.ALSO:Compounds of the general formula <FORM:1010076/A5-A6/1> or acid addition compounds thereof, R is a 3 or 4 sulpho group, R1 and R2 are each methyl, ethyl or isopropyl groups, and Y is an ethylene or 2, 2-dimethyltrimethylene group, are used with solid or liquid carriers or diluents as antiparasitic pharmaceutical or vetinary compositions.  Tablets, capsules, powders, aqueous and non-aqueous suspensions or solutions for oral administration are referred to.